Megasquirt Plug and Play Toyota Supra 1JZ-GTE / 7M
Contents
1. Megasquirt Plug and Play Toyota Supra 1JZ GTE 7M GTE User Manual Table of content Steps to install the Megasquirt Plug and Play ECU cecccccssssecccesececeeeecceeeeseeeceeeceeeeesceeseeaecessenseceeeeees 4 1 Installation of TunerStudio and MegaLogViewer for Windows Mac and Linux 4 Software on Google Play for Android devices cccccsseccccessccecessececceecceceusecessusececeueceeseuecessunecessegens 5 SOMW ale TOPAD DIC device S ssic3 c36is ce AT a E eae raneaaceles 5 2 Installation of the Megasquirt Plug and Play cccccssccccssssecccceseccccescceeseseeeceececeeneceeseuecessengeses 6 For JZA70 Toyota Supra JDM with 1JZ GTE engine Only cc cccccccccesssseccceeeeeseccceeeeeeceseeeeeeeeeeeeeees 6 FOr 7IVIEGTE 8389F Model F ONY era a aniseed oll tabe late iat aube deta Cotenciede de ateesdetetows 8 3 POWERUD the MOS ASQUICE srs cctcctesssecesitadinecans nee E AE 8 4 Connection to a Megasquirt with TunerStudio and a USB or serial Cable ccecccseeseseeeeseeeeeees 8 5 Calibrate the TPS throttle position SENSOL cccccccsscesececcceesecsceenecseeeueeeecececeseeeeeseseusesesaensesss 9 6 Calibrate the IAT intake air temperature and CLT coolant temperature cceccccceeeeseeeeeeees 9 TA SCANDFATCT NE WideDah diresse a a le agaanantieiteens aiuelesmemelounctenbneuas 9 SS MPORTANT 7 Check the UNG areia E a 9 What todo tthe cenene GON TStalteneiedoeii n n a2. a wideband and this is suggested you need to connect to the Megasquirt with TunerStudio select Tools Calibrate AFR Select your wideband sensor in the list or select Custom Linear WB and enter the values manually with the manufacturer specifications It s normal to have sometimes a small offset between the wideband gauge and the TunerStudio gauge One recommended thing to do is to ground the wideband sensor on the wideband connector of the Megasquirt 8 IMPORTANT Check the timing This step is very crucial especially for the 7M GTE engine because the timing is based from the CPS cam position sensor signals and the CPS can move This step is here to ensure that the timing of the Megasquirt is synchronized with the engine If you don t perform this step you can damage or destroy you engine Connect the Megasquirt with TunerStudio then go to Ignition Settings and in the field Fixed Advanced select Fixed timing Enter the value 10 at the Timing for Fixed Advance field On a 1JZ GTE you need to remove cylinder 1 coil on plug install a spark plug wire between the coil and the spark plug and connect the timing light there If you connect the timing light directly to the green wire at the factory igniter plug timing can be wrong Perfect Tuning 9 August 2013 Start the engine with fixed timing at 10 degrees Check with a timing light if the timing is right If not you need to adjust Tooth 1 Angle Th
3. with the right port selected in TunerStudio try to power cycle the Megasquirt turn off turn on and try again For more information please visit http msextra com doc ms3 serial setup html and http msextra com doc ms3 tunerstudio setup html Perfect Tuning 8 August 2013 5 Calibrate the TPS throttle position sensor You have to put the key on the connect TunerStudio to the Megasquirt Go to Tools Calibrate TPS Press on Get Current for the closed throttle ADC count without touching the gas pedal and do the same thing with the Full throttle ADC count while pressing at the maximum value of the gas pedal 6 Calibrate the IAT intake air temperature and CLT coolant temperature Please note that when this dialog box open the previous value is never loaded because this information is Save in a data table and there is no way to know which sensor you chose previously To calibrate the sensors you have to connect TunerStudio to the Megasquirt then go to Tools Calibrate Thermistor Tables Select Air Temperature Sensor for Sensor Table and 3 Point Therm Generator then in Common Sensor Values select you sensor Press on Write to Controller Do that again for the other sensor 7 Calibrate the Wideband Please note that when this dialog box open the previous value is never loaded because this information is Save in a data table and there is no way to know which sensor you chose previously If you use
4. a a eile TT 10 CONNECTOR 10 EXPANSION CONNECT ON ons E T E O 10 Wideband CONNECT O acei E E N EE E AE T ebntecmeees 11 USB CONNECT O aunn A E teense vadsceumetetmeuigeasecedecenet 12 seral Conecto earne aaa aaa a aa a emimearn neers 12 PUTS and OUT DUS netesi e Era A E A A E EES 13 LSrot INDUS ANG OUP Suno a a a a A 13 E Or OU a a a A E 13 lBntIOM OUUU Sneue A T A E A E T 14 KOCK SCNSOFS MDU Seran a a E 14 Mternal Bluetoot Module ecnin a R E E E AEN 14 How to change the Megasquirt engine configuration 1JZ GTE Or 7M GTE ccccccsceeeseceeeeeeseeeneeeseenes 14 How to crimp a wire for the expansion or wideband CONNECHOL cceeccceseceecececeeececeueccueeceseeceeeeeeeens 16 Megasquirt Plug and Play dimensions ccccccssseccceeseccccesccecauesececsusecceceuseceeaenseeeegecesseesecessuaecessuenecessanes 18 CONTIG csr ticecin scares a cinesentiea Suda ims dumeeateasindanty E E E E 18 PCCOSSOM CS creo TEn ch ole cae teat oa ese aa eb oe acca a as weed ave eee sine tae aes eg een eee 19 Perfect Tuning 2 August 2013 Perfect Tuning 3 August 2013 All the documentation for the different versions of Megasquirt is present on www msextra com There is also a forum for technical support discussions and suggestions The MS3Pro user manual is also full of information for the Megasquirt Plug and Play for 1JZ GTE 7M GTE because this ECU is based on an MS3Pro http www diyautotune com downloads ms3 pro ms3pro_manual pdf Steps t
5. e brown IDL2 wire from the flying lead of the stock ECU to the Sensor Ground pin 2 on the expansion connector like the picture above Check with a multimeter the continuity between the wires Here is a picture of the flying lead on the stock JZA70 ECU You have to connect the Sensor Ground wire on the wiring harness and not on the ECU ET TER ON NE NR A AE E SRO TL IN EE LI ME Pigtail SER i EELEE Teer vee mse ene Sen E aA re nmn RE TRL MDE EASA SES Sn rT AE I tt 2 Install a vacuum tune to the Megasquirt Remove the factory hose where the Map sensor is already installed and plug the other extremity of the tube to this intake port Try to connect the vacuum tube directly to the intake without any other vacuum valve Perfect Tuning 7 August 2013 For 7M GTE 89 model only The Megasquirt work with 89 Toyota Supra with 7M GTE engine only gray stock ECU connector The 88 model with the yellow ECU connector is not supported 1 You have to install a vacuum tube to the Megasquirt Connect the vacuum tube to the port behind the intake manifold near the firewall Ideally try to only plug the Megasquirt to this port 2 If you want to remove the MAF sensor because the Megasquirt won t use it by default you have to install another intake temperature sensor because there is one integrated in the MAF sensor 3 Power up the Megasquirt Put the key on when the ECU is connected and
6. en rev the engine and ensure that the timing stay at 10 degrees If the timing drift you can play with the setting Spark Hardware Latency Something around 120 usec should be good Other info here http www diyautotune com tech articles base timing how to htm What to do if the engine don t start To prevent flooding the engine it s possible to press on the gas pedal at the maximum when you turn the key on and during cranking This activates the flood clear mode and completely stops gas injection You can also edit the Required fuel to 0 in Basic Load Settings Engine and Sequential settings This will completely disable gas injection at all time Please note that the 7M GTE have a cold start injector that is not driven by the Megasquirt This will inject a small quantity of gas and it s not possible to stop it from the ECU You have to disconnect the cold start injector to disable it 1 Ensure that the crank and cam synchronization is good The Synced indication in TunerStudio will turn green while cranking 2 Ensure that the spark plugs are firing and you can check the timing while cranking If the engine seems to want to start you can try to press slightly on the accelerator pedal to see if it helps If the engine start this mean that fine tuning is required for startups Connectors Expansion connector This connector contains the access to all the inputs and outputs to add more functionality t
7. f the configuration is for a 1JZ GTE engine you need to place the jumper for AC Clutch CONTROL JZ ONLY at the position top A C like this picture For a 7M GTE configuration you need to remove this jumper AC CLUTCH CONTROL Wideban A C Kabi AC IDLE UP PRET N 1 oeeneenene After that only thing that left to do is to reload a good configuration with TunerStudio into the Megasquirt and repeat step 5 to 8 in this manual How to crimp a wire for the expansion or wideband connector 1 Strip the wire like the picture Perfect Tuning 16 August 2013 2 Insert the wire into the connector 3 With long noses pliers fold the small edges Perfect Tuning 17 August 2013 Megasquirt Plug and Play dimensions 185mm X 159mm X 38mm 7 x6 x 1 inches Contact If you have any issues or questions you can take a look on www msextra com or contact me at perfect tuning live com can give remote desktop and phone support Just contact me by email first Perfect Tuning 18 August 2013 Accessories Wideband sensor AFR 10 1 to 20 1 with a direct connection to the Megasquirt Without gauge Blue gauge for wideband sensor Ov 10 1 and 5v 20 1 52mm CAN network gauge that can show many information coming from the Megasquirt with a small button 52mm Fast response GM intake air temperature sensor open element IAT GM intake air temperature sensor or coolant temperature sensor close elemen
8. fect Tuning wideband color code eve O 4 0 5v signal 0 1v signal Perfect Tuning 11 August 2013 6 NC __ No Connection Inside the Megasquirt there is a small jumper that allows selecting if the Megasquirt needs to read the signal from the wideband connector pin 4 or the signal on the factory oxygen sensor 02 So if you connect your wideband on the wideband connector be sure that this jumper is at the wideband position NOT like this picture AC CLUTCH CONTRObk a c Dp OD ac IDLE uP gt JZ Widebanc r VAVVGVGVGA _ SeeeEeeTT USB Connector Connector used to interface the Megasquirt ECU with an USB B male type cable Remember only one connection at the time to the Megasquirt USB serial Bluetooth Serial Connector Connector used to interface the Megasquirt ECU with a DB 9 serial cable Remember only one connection at the time to the Megasquirt USB serial Bluetooth Perfect Tuning 12 August 2013 Inputs and outputs List of inputs and outputs Here are all the inputs and outputs for the Megasquirt that you will use in TunerStudio settings Expansion connector pin 18 Output Injector Expansion connector pin 19 OR Factory ECU connector pin ACMG 1JZ GTE only depending the jumper position inside the Megasquirt Injectors outputs Megasquirt Plug and Play ECU can only drive high impedance injectors with a maximum of 5 amperes per channel with thermal shu
9. listen if you can hear the fuel pump running for around 3 seconds then turn off This indicates that the Megasquirt is functional 4 Connection to a Megasquirt with TunerStudio and a USB or serial cable You have to install in first the driver for the Megasquirt if it s not done automatically You can download it on the FTDI website www ftdi com or directly at http www ftdichip com Drivers VCP htm If you are using a USB to serial adapter please refer to the manufacturer website for the drivers 1 Plug the USB cable to the Megasquirt and your computer 2 Open TunerStudio 3 Press on File Project New Project 4 Give a project name 5 Put the key at the ON position to power up the Megasquirt and click on Detect TunerStudio will detect automatically the Megasquirt If this step fails put key off and try again 6 Presson Next 7 The next window let you choose between the units you want to use Fahrenheit or Celsius Leave the other options by default and press Next 8 The next window is to connect TunerStudio to the Megasquirt Be sure to select the right port The baud rate will always be at 115 200 9 Choose the desired dashboard You can create custom dashboard with a paid version of TunerStudio 10 Apply on finish You are now connected in real time to your Megasquirt If TunerStudio don t detect the Megasquirt and the key is ON the USB cable is connected and the right driver is installed
10. ly one connection to the Megasquirt can be made at the same time 1 device with serial USB or Bluetooth To use the Bluetooth module you need to pair with the module called MS3PNP and enter the password 1234 When you are connected to the Bluetooth module you can use it to communicate with the Megasquirt How to change the Megasquirt engine configuration 1JZ GTE or 7M GTE IMPORTANT NEVER CONNECT A MEGASQUIRT CONFIGURED TO RUN WITH 1JZ GTE ENGINE ON A 7M GTE ENGINE WITHOUT RE CONFIGURE IT YOU NEED TO OPEN THE MEGASQUIRT FIRST AND CHANGE THE JUMPERS POSITION Disconnect the Megasquirt from everything Open Megasquirt box ON THE MEGASQUIRT HARDWARE REVISION 1 THERE IS AN ERROR ON THE PRINTING OF THE PCB CIRCUIT THAT INDICATES INCORRECTLY THE JUMPER POSITION Perfect Tuning 14 August 2013 Here is the right way to place the jumpers inside the Megasquirt The factory ECU connector needs to be at your right with USB plug at the top 1JZ GTE Peeeeeeeeeeeee YO UU UA Ue UN es uae Wig 7 b Upi 7 RES RBS REE R7E R78 Reg RE7RES 7 Be hes heel i FUTE UU pu has na Ee Mod v1 8 c 2812 DIYAutoTune com u Bai Jf ue MAP So to change the configuration of this Megasquirt you need to change the position of ALL the jumpers in the white printed rectangle on the board Jumpers to the left are for 1JZ GTE and to the right are for 7M GTE Perfect Tuning 15 August 2013 I
11. lytics shadowdash for 9 99S 2 MsDroid is software used to see real time data and you can also tune your Megasquirt and the software is completely free You can make a donation if you like this software for the supported cause https play google com store apps details id com msdroid If MsDroid shows a connection error message goes to http www msextra com doc ms3 files release and downloads your Megasquirt software version by default 1 2 3 and extract the ms3pro ini file to the MsDroid ini folder on your Android device Software for Apple devices 3 MobiSquirt is available for IPhone but with limitations The Bluetooth connection is not supported and you need a WIFI adapter For more information please visit www mobisquirt org Perfect Tuning 5 August 2013 2 Installation of the Megasquirt Plug and Play For JZA70 Toyota Supra JDM with 1JZ GTE engine only A simple way to determine if your ECU is a Toyota Supra 1JZ GTE ECU or a Toyota Soarer ECU is to look at the connector The JZA70 ECU only has 2 rows and the Soarer have 4 rows COMPATIBLE Toyota Supra JZA70 ECU Pin 1 at top right of connector NOT COMPATIBLE Toyota Soarer JZZ30 J Z223 0 1 J 7 GT Note Blue Text Indicates Terminals Related to Automatic Transmission Functions Only TERE FTAL FIST ISLE aasamuaagd ed AUGER Perfect Tuning 6 August 2013 1 ATTENTION THIS SECTION IS ONLY FOR 1JZ GTE Plug th
12. o install the Megasquirt Plug and Play ECU 1 Installation of TunerStudio and MegaLogViewer for Windows Mac and Linux TunerStudio is the software created by EFI Analytics is used to configure all versions of the Megasquirt The software with basic functionalities is free For advanced features like custom dash boards auto tuning and diagnostic you need to purchase the software on EFI Analytics website http www tunerstudio com You can download directly TunerStudio at www tunerstudio com index php downloads When you connect your computer to a Megasquirt for the first time with an USB cable you may need to download the driver at http www ftdichip com Drivers CDM CDM20828 Setup exe Here is a custom dashboard created by users on MsExtra forum You can see more dashboards in this thread at http msextra com forums viewtopic php f 122 amp t 36862 amp start 80 like this LFA imitation for the user 1uz_Nissan MegaLogViewer is the software used to view the data logs created by TunerStudio internal Megasquirt memory or even the data logs created by the Android phone or tablet software The software is also free but you need to purchase if you want to have access to nice features like Scatter plots www tunerstudio com index php downloads Perfect Tuning 4 August 2013 Software on Google Play for Android devices 1 Shadow Dash MS is the Android TunerStudio version You can download it here s details id com efiAna
13. o you Megasquirt This is the view of the connector on the Megasquirt Note that the numbers are also noted on the connector plug See Inputs and Outputs section for more information about the functionality of each pin es En 2 Pater is Y Derg i oe amac ih An Pichia I d ols y eee N Bie E Be se vee Ne BERS Perfect Tuning 10 August 2013 Description of the inputs and outputs pins CAN H CAN bus Sensor Ground ground for sensors Pin Pin Description a Power Ground ground for other Power Ground ground for other 6 Do not connect 18 19 8 PWM2 ground switched 3A max 9 PWM1 ground switched 3A max Wideband connector If the wideband suggested by Perfect Tuning see accessories for more details is not used you can connect any other wideband with a 0 5v signal at the connector position 4 If your wideband also have a ground for the 0 5v analog signal like Innovate wideband it s recommended to connect it to the connector at position 2 For the wideband with only one ground it s recommended to connect it to the Megasquirt at position 1 You can also power 12v your wideband from the pin 3 12v and it s recommended to add a 5A fuse If the wideband supplied by Perfect Tuning is used here is the color code Pin Function Per
14. t Exhaust gas temperature sensor Up to 1250 Celsius with interface board USB Serial cable for computer or Android device Resistor box for low impedance injectors 6channel igniter box to direct drive coil packs Perfect Tuning 19 August 2013
15. tdown protection If you are running low impedance injectors you can use Perfect Tuning 13 August 2013 a resistor box contact Perfect Tuning or peak and hold driver board Unused injector outputs may be used as general purpose outputs Ignition outputs Megasquirt Plug and Play ECU use 5v logic level to drive an external ignition module or logic level coil packs Do not connect ignition outputs directly to the negative terminal of an ignition coil This will damage the Megasquirt We recommend the 6 channel igniter module see Accessories to drive directly coils Maximum current is 200mA per channel Unused ignition outputs may be used as general purpose outputs Knock sensors inputs The factory knock sensors are connected to the Megasquirt To try this option you need to configure it in Ignition Settings Knock Sensor Settings Knock Control and set Input type to Enabled and Input type to Internal This feature should be used for safety and not for tuning Here is the resonance frequency of each engine useful in the other window settings 7mgte bore 83mm and resonance frequency 6 9 kHz 1jz bore 86mm and resonance frequency 6 7 kHz For more information refer to this page http www msextra com doc ms3 ignition settings html knock Internal Bluetooth module This Megasquirt Plug and Play has an internal Bluetooth module inside for wireless communication with the Megasquirt Note that in every situations on
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