RX7 IDC tracking water injection system User manual
Contents
1. 2 Change over relay contacts The HFS 6 has an onboard relay to supply a set of voltage free change over contacts for the sole use of fail safe activation It can be used to perform various tasks to save your engine The contacts are rated up to 1 amp What steps to take after the failsafe trigger The most common way to minimise engine damage in the absence of injector is to reducing the boost pressure 1 For engines with electronic boost control valve The yellow harness contains a set of relay contacts that goes open circuit when the fail safe is triggered See page 18 2 and 19 for more details 2 For engines with MBC manual boost controller There is a dedicate channel for control a 3 port sole noid valve to by pass the MBC Essentially reducing full turbo boost to the wastegate See page 19 for more details 3 For engine with map switching capabilities The pink wire on the yellow connect has a dedicate output to perform such a task This pin can be user configured match the signal requirement of the third party ECU to switch map See page 18 1 for more details This pin is factory configured to give a 5V for OK and Ov is flow fault Maximum current of this output is 5mA Colour code for relay normal operation White sscrcasasssnnscrstasetieraanuresert s Common contact Black oo eee eeeeeeceeeeees Normally closed contact BLOW ce ceeeeseeeeeeeeeeees Normally opene2. 400 Don t forget to subtract the boost pressure from 0 8mm I z s the line pressure of 160psi For example if you are 5 boosting 25psi you should select the jet flow at gt 350 0 7mm 135 A 3 psi 300 res Once the jet jets and flow are determined insert the nearest HSV restrictor to regulate the fluid flow 250 arr so the delivery will be linear to the duty cycle JET 60 70 80 90 100 110 120 130 140 150 160 170PSI 200 0 4mm l 0 3 108 116 124 132 139 146 152 158 164 170 176 181 n eee ae 0 4 144 155 166 176 185 194 203 211 219 227 234 242 G wo aa 0 5 194 207 220 232 243 254 264 274 284 293 302 179 0 6 215 233 249 264 278 292 305 317 329 340 352 3625 0 7 251 271 290 308 324 340 355 370 384 397 410 423 100 0 8 287 310 332 352 371 389 406 423 439 454 469 483 60 70 lt 80 90 100 110 120 190 140 190 160 170 0 9 323 349 373 396 417 437 457 475 493 511 527 544 S Pressure psi j J T T j IE 1 0 359 388 414 440 463 486 508 528 548 567 586 604 The HFS 6 is supplied with a set of high flow water jets sized at 0 8 0 9 and 1 0mm see chart for flow rate A Y piece is supplied with the kit for twin jet applications There are two nickel plated brass jet adapters 1 8 NPT The tapping hole should be 11 32 or 8 8mm Do not over tap Clean the mating
3. 12v 2 purple 20awg Gauge Dimming input to head lamp switch 0 5 VDC 10mA 3 white 20awg OV Ground signal ground 250mA max 12v 4 black 20awg OV Ground Power switching ground 1A 12V max Red Harness to Engine bay 2 5M To Flow Control Module 1 red 24awg 12V PSU to Flow control Module 1A max 12v 2 green 24awg Flow Sensor Calibration Signal 5 0 VDC 10mA 3 pink 24awg Wastegate By pass valve option 12V 1A max 12v 4 white 24awg Wastegate By pass valve option SW 1A max to Ground 5 yellow 24awg Flow Sensor output signal 0 5 VDC 10mA 6 blue 24awg Reserved for internal communication usage Signal level digital 7 black 24awg OV Ground signal ground 1A maximum 8 brown 24awg PWM valve distribution signal 1A 12V max Yellow Harness to EMS 2 5M IDC Boost detection and Fail Safe Map Switching interface 1 red 24awg Ignition Switching detection 30mA max 12v 2 green 24awg Fuel injection IDC detection 10mA max 12v 3 pink 24awg Map switching interfacing 0 5V 7 5V 1mA 4 white 24awg Failsafe Relay contact COM Wiper 1A 24V max 5 yellow 24awg Reserved for internal communication Signal level 6 blue 24awg Map Sensor Signal for IDC compensation 0 5 VDC 1mA ia black 24awg Failsafe Relay contact N C contact or DR 1A 24V max 8 brown 24awg Failsafe Relay contact N O contact 1A 24V max Blue Harness to Trunk Area 6M GUARANTEE ERL guarantees at our option to replace faulty goods sup plied or repair the same subject
4. bag 1x DDS3 Dash Gauge with 1 5 M x 8 way cable K D ict ee a sree ae e 2M of multicore with yellow capped RJ45 for S ANN Waler Ie i iR astic ag ECU interface fail safe and Map switching 1x 4mm Y piece 806 362 in plastic bag s serra 2x M8 x 1 8 NPT jet adapter with plug 806 357N Note Please contact your supplier immediately should you discover any missing parts Getting started on installation Before installation guidelines The pump and water tank are designed to be fitted in the trunk Install the water pump and inline filter below the water tank Ensure all fittings are tightened and leak proof before filling up with methanol test it with water first If high concentration of methanol is used please vent the tank s breather hole ex ternally Methanol is poisonous at high concen trations Assembling the pump in steps Gently assemble the two 3 8 BSP adapters into the pump without crossing the threads The female one goes into the inlet of the pump Flow direction is moulded onto the plastic pump head Ensure o ring is properly seated Ensure the accumulator lies horizontally after final tightening relative to the pump length Assemble the accumulator supporting bracket with the metal band supplied Assemble the rest of the 1 8 BSP elbow fittings and blanking plugs Ensure all o ring type fit tings are not overly tightened Mark smear dye on to the pump s rubber feet and drill four holes for the pump In
5. E In order to make the fail safe adjustment easier it is recommended to set the bargraph to display 5 6 bars at maximum flow This way the fail safe win dow can span from the centre outwards If the WL and WH is set at 12 O clock the fail safe window is approximately spanned between 2 7 bars A good starting point Minor trimming for the WL is necessary if the water injection trigger point is set to commence earlier The gauge will display the activation of the fail safe with two leds B led right of the bargraph will not active if the ae is outside the fail safe window during injection period 2 The yellow led water level will activate if the flow is outside the fail safe window during injection As soon as the fail safe is tripped there will be a 3 second reset period before it resets If the fail safe drops boost user can modify this reset timer See fail safe trimmers on page 14 When gauge Is off expect low boost and safe map unless the board is re configured page 21 B Setting up the fail safe This final stage should be quick simple and effective please read it before proceeding It will save you time in the long run lf fluid flow falls inside the fail safe detection win dow after triggering no action will be taken So setting up the width of the window to accommo date the full fluid flow is vital Setting up the fail safe should only be done after the car has bee
6. N COMP SENS RST ADJ Green led F IDC Monitors the incoming Fuel injector signal flicker in time with the engine speed glows brighter with increase of duty cycle Amber led THRES When the Fuel injector duty reaches the threshold setting of the trimmer the led lights up solid Red led gt 95 DC When the flow control valve reaches above 95 of it rated flow this led will lit up FAIL SAFE trimmers explained 5th and 6th potentiometer from the left allows the user to trim the fail safe parameters FLSF SENS Fail Safe Sensitivity The grace periods before triggering is set to 0 3s from the factory User can alter these values to suit their driving styles FLSF RST Fail Safe Reset Timer The failsafe automatically reset in 3 seconds default after activation In some circumstances as in rally cars user requires a faster reset So aggressive map or high boost is restored almost instantly Bigger turbo takes time to spool down especially when a blow off valve is installed This calls for a long reset time otherwise the boost can never drop down to the wastegate setting This trimmer allows the reset period be adjusted be tween 1s to 5s Automatic Gauge brightness control This trimmer works in conjunction with the head lamp switch When it see a 12V signal the trimmer be comes active This coincides with night drive condi tions The high intensity led used on the dash gauge is too bri
7. RX7 IDC tracking water injection system GETTING TO KNOW THE AQUAMIST HFS 6 osa Aquamist has been pioneering the IDC based water injection system since 2004 with great success The HFS 6 now offers user re scaling and manifold pressure compensa tion adjustment This new capability sets a new level to the concept of WAI system to date The concept behind the HF5 6 osa open source architecture design is somewhat unusual in many ways in the key taeping digital age It goes one step beyond the current cell by cell on screen programming via a lap top The only tool needed is a small screw driver User can define the entire flow curve by manipulating five onboard trimmer potentiometers Each trimmer is pre programmed with a mathematical formula to simplify the flow mapping work The wiring task has also been revamped to cut installation time Three dedicated colour coded pre terminated wiring harnesses are allocated for each area of the car covering the engine bay ECU and water tank oump in the trunk Continuing the same tradition of constant water pressure and fluid flow is controlled by newly designed inline high soeed valve This new valve is necessary to handle the new line pressure of 16Q si risen from the previous pressure of 125psi Contents System Check Page 4 Checking the contents of the box 5 Getting started on the installation Installation 6 Installation for long term reliability 7 Generic wi
8. S ADJ trimmed to minimum full counter clockwise At this setting 12 IDC the system should trigger with a quick blip of the throttle provided you don t use very large fuel injectors Keep the trimmer in the same position 4 Take the car for a test drive Eyes fixed on the road and water jet on screen find a stretch of road where you can use full throt tle Do a few quick burst of full throttle runs and see if the spray is progressive with each acceleration run The volume seen at the spray should coincide with the bargraph readings on the dash gauge This concludes the test session of the HFS 6 Advanced flow management trim The HFS 6 is designed to allow the user to ma nipulate the two main signals received from the fuel injector and the MAP sensor This is achieved with four trimmer pots Tweaking of these are not mandatory for initial system testing after a fresh install 1 THRES ADJ far left This sets the triggering point of system based on the fuel injector IDC Adjustment range is be tween 12 to 72 Mid point is 42 12 o clock 2 IDC TRIM trimmer At mid point the water flow matches the fuel IDC exactly For example if the triggering point is set to 50 of the Fuel IDC the DC to the flow valve will also be at 50 The trimmer can offset the F IDC to 20 This 3 IDC GAIN trimmer As the previous trimmer does not allow top end flow increase or decrease when the start
9. be manually ativated to flush any possibly dirt disturbis from the lines 2 Ignition key on the ACC or 1 position Wiring work checklist Absolutely no change same as the above conditions The HFS 6 is pre configured from factory just requires the following connections to get to work 3 Ignition key on the pre cranking or 2 position Do not crank Observe the gauge and controller leds Yellow led on the gauge will stay lit for 5 10s before 1 4 way Power in connector Red cece Switched 12V IGN SW 2 Black wo Chassis ground White oe Chassis ground Purple Head lamp switch optional 2 Signal to the yellow RJ45 connector Red wee Ignition switched 12V Green oo Fuel injector pin Blue wo MAP sensor optional the rest of the gauge lights up S and W INJ led should be lit on the gauge All the green leds on the HFS 6 controller should be lit with the exception of the green connector 3 Start the engine and let it idle for a minute or so The green led on the controller should flicker The yellow led on the green and yellow RJ Con nector socket should flicker Flicker should speed up with engine speed If the system behaves as stated above you have Power up procedure Please follow this procedure strictly or per manent damage to the system may result Do not skip any steps please 1 Ignition key o
10. c shaving should remain in the delivery system 1 2 inch from the bottom of the tank is ideal Don t over tighten Same hole size for the water level sensor IF using a washer tank for supply do not locate the Aq uamist float sensor near the stock washer pump The float should swing upwards A tall and slim water tank is ideal for this type of application This minimises delivery surge prob lems at low water level O00 0 000 BATTERY blade to retain the roundness Side cutter pro duces a semi round hose end major leak will result sooner or later It is also vital that the hose must be cut be perpendicularly relative to this length This is because the compression has a short hosetail an accurate cut will allow maximum grip on the walls of the hose The ground tag must make a good electrical contact to the chassis ground Smear some grease on the junction to protect it from moisture 8 feet of two core cable from the FCM is intended for fail safe purposes It activates a low power 3 way solenoid valve to by pass boost pressure to the wastegate In the event of a fail safe activation it will lower the boost down to the mechanical fail safe setting This option is normally intended for use with a manual boost controller and some step per motor based electronics boost controller The Tank level sensor Check there is ample room of the sensor arm to swing before drilling If stock
11. d contact state changes upon fail safe activation or sys off Example 1 most common S Disabling the OE boost control valve Cut seS and splice the boost control circuit ECU ZES side to White BCV side to Brown Q 5 a co Need to link the Anti CEL option on page 10 7 Place the jumper link to DR ON Dummy load resistor This is only necessary if you want to avoid the onset of CEL during fail safe activation Example 2 Disabling the third party electronic boost control system Cut and splice the pulsed wire to the BCV Controller side to White and BCV side to Brown It is not necessary to enable the Dummy load resistor to avoid a CEL This option will not work with EBC Elec tronic Boost controller utilising a stepper motor to control boost HKS EVC is such an exam ple Use the MAC valve option on page 17 Fail safe wiring to other boost controllers Upon detection of water flow fault the HFS 6 can reduce the boost pressure of a MBC to wastegate setting There is sealed end 2 core cable attached to the FCM Flow Control Module for this purpose If you intend to use this fail safe channel The HFS 6 does not include this valve You need to order one from any distributor of MAC valve USA Figure below shows two common type of MBC man ual boost controller used on most turbo cars Type 1 pressure from the turbo to the wastegate is vent
12. ding up in trunk area Methanol is highly flammable The main delivery hose to the engine bay should be routed underneath the car En sure it is securely clipped and fastened Avoid kinks close proximity of moving parts and heat producing components Please treat this recommendation seriously If in doubt ask advice from a professional person familiar with this kind of application DO NOT take any undue risks It is recom mended that a suitable fire extinguisher is placed within easy reach of the driver All electrical connections must be properly tightened to avoid spark production Warning Prolonged use of 100 methanol may cause premature pump failure and may not be covered under warranty 6 function directory ie USER AREA PORT CS SBE gt 95 20 ae e p a7 NNa DR ON DR OFF AQU J IS Q OPEN SOURCE ARCHITECTURE WATER INJECTION SYSTEM D s Iwt IAD A GAIN COMP SENS RST FUTURE PRODUCT INTERFACE P 7 DUMMY LOAD RESISTOR for ANTI CEL P 18 SYSTEM CONFIGURATION BY USER P 13 14 FLOW and FAILSAFE POTENTIOMETERS P13 14 0 5A 20mm x 5mm FUSE LINK 6 P 7 7 8 9 1 Quick Start Dash Gauge is plugged in and switched on All the RJ45 plugged are colour matched 4 way plug is engaged into the socket No leds should be lit anywhere Mechanical work checklist Only after testing with distilled water should methanol be used BEFORE hooking up line to the jet the system should
13. ed for factory FSI developer usages only 2 PWM MODE polarity default negative switched To change the PWM detection polarity to positive pick off the thin track and solder link the pad to the long pad 3 WLS Water Level Sensor default linked Pick off the thin circuit track if you do not wish the tank level sensor to disable the system after 10 20 seconds of low level reading not recommended 4 CLP Clamping M SW signal default 4 7V Solder linking this pin will clamp the above MSW signal from 7 5V to 4 7V suitable for most digital devices It is factory set to a clamped 4 7V 5 M SW polarity default positive until failure The factory default output is preset to give a OV output upon a fail safe activation Otherwise the output will stay at 4 7V 6 DHB Disable High Boost default off Pick off the thin circuit track if you want to retain high boost or Aggressive MAP after the system is switched off at the gauge Ensure you have race fuel in your tank Yellow led will stay on as a reminded when gauge is switched off 7 COMP IDC PRESSURE default P IDC is the main signal to meter flow from factory If user wishes to use the MAP sensor as the main control signal use IDC for compensation Alter the default link to I IDC Otherwise leave the link as it is 8 MAPS Select MAP Signal source default X The HFS 6 is factory configured to read the pressure signal from an external sou
14. ed to the atmosphere via a restrictor and a vent Boost increase is proportional to the amount vented m HFS 6 osa Flow Control Module Type 2 Boost increase is proportional to the spring pressure of the MBC When the solenoid valve is energised pressure from the turbo is diverted to the wastegate di rectly When MBC is by passed the boost pres sure will drop down to wastegate setting NOTE The same MAC valve can be used to reduce boost on any Electronic Boost control valve system Use the same hose configuration as the TYPE 1 with Port 2 blocked off See figure below MAC valve 36A AAA JDBA 1BA www macvalves com TYPE 1 MANUAL BLEED OFF VALVE Advance system configuration solder link 1e MWY TYPE 2 MANUAL BLEED OFF VALVE Links are factory preset no need to alter the setting unless customising Advanced system configuration solder link The HFS 6 is pre configured at the factory for gen eral applications If the user wishes to change the original setting this is the section to explain it all You will require a small tipped soldering iron and a small pointed tool As seen from the PCB figure on the left All the user configurable links are marked with numbered circles Some pads are pre linked from factory If you need to change those pick off the thin track pointed tool and solder link the alternative solder pads 1 FSI system compensation link default off Reserv
15. ent range 10 Under range setting potentiometer WL This setting can indicate partial blockage and trapped air inside a delivery hose Again 20 stepped potenti ometer is employed Each click represents a fixed portion of the window width of 8 bars WL covers the lower 4 bars and the WH cov ers the upper 4 bars Figure on the right il lustrates the span of the coverage Setting is very simple once SC is calibrated failsafe window width coverage 20 clicks DEO 4 Water Level led yellow This LED has three functions a During power on delay period This LED will activate for approximate for 10 seconds during the system on delay before the main system turns on b During normal operation period This LED is on during the fail safe activation Water level low intermittent flashes c Led lit after the gauge is switched off If the water level sensor is activated for over 20 seconds fail safe disabled by DHB 21 6 5 SC Sensor Calibration 20 stepped potentiometer allow user to scale the flow sensor to give an ideal visual indication of a given flow rate Ideally set the led to dis play 5 6 bars at full flow 6 Backlit flow legend Legend displays of full scale of 8 bars 7 B Boost Enabled led When the flow falls inside the fail safe window after system trigger this B led will activated Useful indicator of the WL and WH setting Page 16 NOT
16. ght for night motoring So wiring in the purple wire from the 4 way power plug to the head lamp switch is essential Do not wire it to the car s interior dimming circuit or unexpected results may occur Dash Gauge Functions ix 25 50 75 100 XFSD W INJECTION 5 amp WATER LEVEL sc WL WH 1 8 element Bargraph Display 80 1800mI min Each segment is equivalent to a percentage of the total flow of the sensor scaled by the SC potentiometer 2 S indicates the presence of sensor The letter S Sensor must be lit after power up and stay on to show the sensor is functioning correctly 3 Water injection system ON led This led comes on the when the system is switched on and In readiness to inject Dash Gauge Functions cont 8 Water injection enable button Due to extra power level achieved under WI user may want to reduce the power to the wheels in less than ideal driving conditions Disabling the WI will reduce boost to wastegate bleed valve setting if fitted as well as switching to a less aggressive MAP on custom engine management 9 Over range setting potentiometer WH It is just as important to monitor over range condi tions as well as under range flow conditions If a leak develops close to the water jet and starves the engine of the water the user must know this condi tion A 20 stepped potentiometer allows accurate and repeatable adjustm
17. ing point of the DC is altered This potenti ometer is designed to ad dress this section of the flow curve IDC GAIN 50 WATER FLOW This allows the user to de crease or increase the water L flow relative to the fuel flow This is useful for those who install very large fuel injectors and never use up the full DC 4 BOOST COMP trimmer Since the HFS 6 does not reference the system pres sure against the manifold pressure changes This inevitably decreases the water flow during boost periods This trimmer compensates this shortfall FUEL FLOW means that one can de crease or increase the water flow relative to the fuel flow This is useful for trimming water in dif ferent ambient tempera ture and compensating for methanol water ratio changes 0 5V pressure signal is read from the ECU At Mid point 2 5V the system will start to add DC duty cycle to water flow curve as soon as the manifold pressure signal exceeds 2 5V The compensation factor is 4 per volt above the trimmer setting If more boost compensated flow is required just lower the trimmer setting A excel based tool is available for download to help visualising the trimmers htto www aquamist co uk HFS6 DUD 1 xIs IDC TRIM 20 WATER FLOW FUEL FLOW More advanced flow management trim continued LEDs to assist visualising the flow curve F IDC THRES gt 95 DC See Se et ae eet ia a ce ADJ TRIM GAI
18. itrous intercooler cooling Subaru sti http forums evolutionm net water alcohol injection nos 173 Mitsubishi evos http www rx7club com forumadisplay php f 173 RX7 ERL Itd Iroko House Bolney Ave Peacehaven East Sussex BNIO8HF England
19. n the OFF or 0 position Quick Start Manual testing Testing the controller functions Ee 1 Gauge Bargraph test Taking the parked PRK link and place it on the CAL slot you should see 4 5 bars lights Css De EAK CAU bead up Twiddle the SC trimmer on the gauge will yield more or less bars Clockwise to reduce bars Reinstate the SC back to 12 o clock Make sure IDC is selected 2 Simulating 100 injection test Remove the link and put it on the TST slot mo mentarily and observe Amber led on the controller board will light up Red led on the controller board also lights up The yellow should light up except for the blue RJ connector The water pump will start There should be full spray on the jet instantly unless the system is not fully primed Allow a few seconds for the water to reach the jet For longer hose run installations remove the jet first to allow faster priming Remove the link and put it back to the PRK position before you empty the water tank If all is well move to the next test stage successfully wired up the HFS 6 The next stage will be testing the system manually by using the jumpers links on the controller board You will need a small 3 32 slotted screw driver 3 Testing the IDC detection function F IDC see Se Ge Se Gr Ge This test confirms the system is detecting the IDC signal correctly Set the THRE
20. n tuned or the jet jets sizes are finalised Recommended steps to set up the fail safe 1 Adjust the SC to display 5 6 bars at full power 2 Make a mental note of the number of displayed bars during spool up Made easier at higher gears 3 Set the WL to match the number of spool up bars It is recommended to allow 2 3 clicks below that point to avoid false triggering Full span of WL is 20 clicks covering from 0 bar to 4 bars 4 Same procedure to set up the WH allowing 2 3 clicks above 6 bars Full span of WH is 20 clicks covering 4 8 bars This completes the fail safe setup Setting up the alternative Fail safe Channels Alternative to the previous fail safe configuration using a third party by pass valve to reduce boost via the FCM Flow Control Module There are two more fail safe channels available from the Yellow RJ45 connector harness 1 The Map Switching Channel The pink wire from the yellow RJ45 connector is dedicated for the use of MAP Switching when an ECU is equipped with this input This wire is factory configure to send out a voltage of 4 7 VDC voltage under a no fault condi tion from idle to full boost This voltage will switch to Ov upon a fail safe activation or the gauge is switched off PINK Other voltages such as Ov or 7 5V can be user configured see p 21 for more details This is by far the most effective method to save your engine from lack of water injection
21. part with alco hol first Trial fit before loctiting into position Three restrictors are supplied for duty cycle flow matching should good linearity be re quired For flow greater than 1100cc min you can omit it It should be fitted inside the inlet port fitting of the Flow Control Module FCM Remove the inlet fitting first from the FCM Use the threaded insertion tool to push the restrictor in position Apply a smear of grease to avoid damaging the o ring 0 380cc min 0 680cc min 0 1080cc min 0 5mm restrictor 0 7mm restrictor 0 9mm restrictor HFS POWER bedi HES Gv DASH GAUGE P 15 12V HEAD LIGHT SWITCH and GROUND gr o N re BAY FLOW CONTROL MODULE in ENGINE BAY P 7 ENGINE MANAGEMENT and FAIL SAFE P 18 WATER TANK and PUMP in TRUNK AREA P 7 Applications involving methanol mix beyond 50 Great care and attention must be taken to ensure the fluid tank is capable of handling methanol and is designed for this type of application These tanks are normally termed as a Fuel cell and are available from most reputable racing parts suppliers Anti surge foam should be used for circuit racing Follow the maker s guidelines carefully The breather hole must be vented externally with a suitable hose All fluid delivery hoses and fittings must be free of all leaks Ensure the area is well ventilated and isolated from the driver s compartment Take whatever measures to avoid any methanol fumes buil
22. rce such as an ECU or third party MAP sensor However if this is not pos sible the HFS 6 has an option of adding an internal 3 bar MAP sensor on the circuit board Please contact the factory for this option You may need to return the controller to make this alteration HFS 6 IDC SUMMER for RX7 WIRING DIAGRAM v1 5 9 LINK TO RX7 POWER TRAIN CONTROL MODULE ENGINE OE BCV CUT MAP SENSOR FE LIW 4U G Y F 10 a HFS 6 SUMMER HARNESS FLOW CONTROL MODULE J PRIMARY LJ INJECTOR SWITCHED TANK PUMP HARNESS O00 0 O00 J LAL pash Pcie tens TRUNK USER GAUGE 5 BAY AREA PORT TET HFS 6 osa fo Flow Control Module as OPTIONAL WASTEGATE BY PASS VALVE Fuel injector _J SECONDARY LJ INJECTOR BATTERY In Car Dash Gauge 2M Pin Colour Size Description Electrical parameter Appendix 1 red 24awg 12V power supply to gauge 250mA max 12v 2 green 24awg Flow Sensor output voltage 0 5 VDC 10mA 3 pink 24awg OV power supply to gauge 250mA max 12v 4 white 24awg Internal communication signal 5 yellow 24awg Float Sensor from water tank Ground active 6 blue 24awg Flow Sensor calibration output voltage 5 0 VDC 1mA 7 black 24awg Night driving dimming connection 12V active 8 brown 24awg Wastegate bleed valve option SW 1A 12V max Molex Microfit power harness 2 M Main Power supply and Dimmer control 1 red 20awg 12V Power supply switched 250mA max
23. ring diagram 8 9 Choosing jet size System testing HFS 6 pin out function directory 11 12 Quick Start Gauge 15 14 Advanced delivery management Dash gauge 15 16 Dash Gauge functions Fail safe 17 19 Fail safe configurations Advanced 90 2 Advance system configuration Appendix 99 94 Wiring details Guarantee and Warranty Checking the contents of the box carefully e Asetof three restrictors with threaded tool e 1x water tank adapter 1 8 BSP 806 270 6mm qck fit elbow 806 376 Water pump e 100 micron inline water filter 806 257 e 4x M5x 40mm nuts washers and fasteners for Unpack the corrugated sheet carefully The pump should be labelled with the original custom Aquatec Pump j Aquamist logo Model number 58832P0D B664AM 1x M6 grounding stud with washed and nuts and 6mm eyelet for pump ground The white box 5 port brass manifold with 3 8BSP adapter 3x blanking plugs 1x 3 8 BSP M to 1 8BSP F adap 6M of 6mm OD nylon hose 806 261 tor 2x 6mm 1 8BSP M elbow gt MOr gD yp Nose Iupee 1x 22cc surge arrestor accumulator 806 409 15A Fused water pump harness with 40A relay Water pump hatness 6M of 12 AWG cable e 75mm stainless hose clip and support bracket ahd Ghar m lticsra ible with blue RJ45 e HFS 6 Flow Control Module with 2 5M of red 4 HES contralier box l capped Ras eonhese nampss l e 1x water level switch with connector 806 280c 2 A ler 000925 a piesti
24. stallation for long term reliability This is the most important section of the HFS 6 chapter Please do not skip reading this part 52mm Dash Gauge Location is not too critical as long as it is in view of the driver There aren t too many pitfall on this HFS 6 controller box Please locate the box in a dry location in the pass compartment Near a glove box is whats been found to be best Please route the wiring and secure loosely so that tuning and diagnostics can be made without too much dis assembly in order to gain easy access its been found by professional installers and advanced users that it would be nice to hold the box in the hand while sitting in the front passenger seat when tuning or diagnosing Flow Control Module FCM The location of this module is most critical to overall system reliability It is designed to be installed in the engine compartment This module must be installed in a cool and dry area well away from the heat source Bulkhead fire wall is not a good location as most heat is flowing to wards it during driving Avoid location near any elec tromagnetic components such as the ignition coil solenoid valves and electronic motors It is very important that the hose is cut cleanly with a razor Page 5 Water tank components e Ensure the outlet is facing the rear or the side of the tank Drill oore a burr free 23mm hole Clear up all the burred edges and wash the tank thoroughly No debris or plasti
25. to the claim made in writing to us within 12 months after the sale by us or for such other period as may be indicated by us for specific products in lieu of any warranty or condition implied by law as to the quality or fitness for any particular purpose of the goods Any claim against us must be made to us in writing within the period of 12 months after the sale by us or our agents or our distributors of goods in question or such other period as may be indicated by us and any goods to which the claim relates must be returned to us within that period suitably packaged and cleaned and with any particular instructions which we may have notified to you at the time of supply Original invoice the nature of any claimed defect must ac company the goods in question prior to despatch to us If these requirements are not complied with our Guarantee shall not apply and we shall be discharged from all liability arising from the supply of defective goods LIABILITY We shall not be under any liability whether in contract or tort or otherwise and whether or not resulting from our neg ligence or that of our employees in respect of defects in goods supplied or for any damage or loss resulting from such defects We shall not be under any liability for damage loss of ex pense resulting from failures to give advice or information or giving the incorrect advice or information whether or not 1 red 24awg 12V Power supply to 40A relay 0 5A max 12
26. v due to our negligence or that of our employees 2 green 24awg Water level sensor ground signal ground 0 5A 3 pink 24awg Reserved for Internal usage weeeeeeee In no event shall any breach of contract on our part or tort 4 white 24awg Reserved for Internal usage 0 including negligence or failure of any time on our part that 5 yellow 24awg Water level sensor detection signal Ground active of our employee give rise to liability for loss of revenue or 6 blue 24awg switch ground to 40A relay 12VDC 0 5A consequential loss or damages arising from any cause what 7 black 24awg Reserved for Internal usage ween soever 8 brown 24awg Reserved for Internal usage a A anes Note ERL reserves the right to make changes to our prod 9 Red 12awg 12V Power cable to water pump rela 38A 12V max j ice j i i of Black Pag OV ground for water pumpe p relay 38A 012V max ucts without notice in order to improve design performance and reliability Useful Aquamist technical links Aquamist owners have been pretty good in supporting each other Most experienced users will help new users with questions not necessary to email or make long distance phone calls and wait on hold to get help Here are a list of clickable forum links where users can seek help and advice from others http www waterinjection info general htto forums nasioc com forums forumdisplay php t 145 Subaru http www iwsti com forums water meth injection n
27. washer tank is going to be used do not mount float near stock washer pump The motor magnet will affect the sensor to read properly The sensor can be installed 3 4 way down the tank Preferably at the rear facing wall of the tank A 23mm burr free hole must be used to ensure good seal Never over tighten or the seal will split just tight enough to prevent leakage no more Generic wiring diagram go to page 22 for RX7 specific diagram FLOW CONTROL MODULE IGNITION SWITCH INJECTOR F FLOW W INJECTION WATER LEVEL sc WL WH Made in englon SWITCHED 12V HEAD LAMP SWITCH FUEL INJECTOR FUTURE PRODUCT INTERFACE PORT ENGINE CONTROLLER Choosing jet sizes MAP SENSOR 0 5V WATER PUMP IN TRUNK OPTIONAL WASTEGATE BY PASS VALVE 160 PSI BYPASS PI BATTERY MADE IN USA AQUATEC N Pressure vs Flow This is a general guide only l oe 100 water run 10 15 water fuel ratio 50 50 methanol water run 15 20 to fuel 100 methanol run 20 25 to fuel 550 I Choosing the jet by calculation S First work out the total fuel flow by adding up the 10mm capacity of the fuel injectors Multiply the result by the preferred recommended above 450 0 9mm l Pick the nearest jet jets size to match the flow
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