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--- 2ginevo8 [2010/08/31 13:28]
twdorris
+++ 2ginevo8 [2024/03/15 11:16]
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-====== Running a 2G DSM ECU in an EVO8 ======
-This used to be a popular swap for a while back when the EVOs were new.  The interest seemed to die down a bit as guys started playing around with ECUFlash and EVOScan.  But for some reason, we're getting more and more requests for this information lately.
-So I thought I'd put this page up to help guys get the ball rolling.
-===== Wiring swaps =====
-Obviously, you need to swap a few wires around on the ECU harness.  This is the list of the main things that need to be re-ordered.
-**Evo harness** -> 95 ECU
-**22** -> 8 Swaps Fuel pump relay and AC relay control \\
-**8** -> 22
-**10** -> 23 Inverts coil control for proper firing order \\
-**23** -> 10
-**32** -> 20 Moves condensor fan control to ECU \\
-**34** -> 21
-**40** -> 13 Moves Cam and Crank sensor Ground supply
-**43** -> 91 EVO clutch wire to feed NLTS
-JUMPER TO 89 Do not swap, splice 89 (crank signal) to 58 (tach input) for proper tachometer operation.
-Cut this wire, run a wire from 56 at the 95 ECU to pin 1 at the data link connector. Cut pin 1 wire at DLC, do not splice this in.
-==== Patch harness ====
-By all means, use a patch harness when doing the swaps mentioned above.  It's SOOO much easier to do this while working at a table inside the house/garage than it is under the dash on your back.  It's a little pricey, but well worth it.  Some sample shops are below.  I'm sure there are plenty of others.
-[[http://www.machevo.com/cocoecupaha.html|Mach V patch harness]] \\
-[[https://www.lancershop.com/customer/product.php?productid=260|Lancer Shop]] \\
-[[http://www.maperformance.com/aem-ecu-patch-extension-harness-mitsubishi-evo-8-30-2983.html|Modern Automotive Performance]]
-===== Known issues and work arounds =====
-==== Fan control ====
-Main Radiator Fan is always on when the key is on.  The EVO setup uses PWM logic to control the fans where as the 2G DSM just has a simple on/off switch.  I'm 100% sure there is a way to swap a few wires at the EVO fan controller harness and get this working properly.  If/when we dig this information up, I'll post it here.
-There is one thread on our forums with a breakdown on one approach to this.
-[[http://www.dsmlink.com/forums/showthread.php?p=68522|2G ECU in an EVO8 fan control]]
-If you read through that, you'll see it wasn't a perfect solution, but certainly better than just running the fans all the time I suppose.
-I'll attach a copy of the post below for reference.
-  I've attached the schematic that Justin sent me. I added the pt# for the style diode to use
-  since that info had been left out. Thanks to Tom and Dave for suggesting what diodes to use.
-  edit: btw I found the polarity of the fan to be blue + and black - I've learned that the fan
-  bypass isn't a perfect fix. I made a change to the schematic because having the relay's pin
-wired directly to the battery allows the HVAC fan to be operational regardless if the key
-  is in the ignition or not. I don't know why this is unfornutely and maybe someone else with
-  better knowledge of the circuitry can chime in. What I did to fix this was take the wire from
-  pin 86 and move it from the battery to a switched +12v connection. The fan controller mounted
-  to the front of the rad fan has a switched power lead that is only active when the car is on.
-  So thats where I spliced in for an ign. switched 12v source. Now with it wired like this,
-  the rad fan and HVAC fan work as they should but for some reason the A/C fan will cycle on
-  for aprox 3 secs and then shut off everytime the key is turned off. So its still not a perfect
-  fix but at least now the rad fan works when it should and the HVAC fan as well.
-The attachments referred to above are provided here:
-{{http://www.ecmtuning.com/wiki/_media/fanmod.jpg?200x134}}
-{{http://www.ecmtuning.com/wiki/_media/a-29_-_fan_connector.jpg?200x211}}
-==== Idle control ====
-The EVO ISC motor must provide more airflow per "step" because default operation with a 2G DSM ECU results in idle surges as the car starts to move.  You can disable this using the patch listed at the bottom of this page.
-[[http://www.ecmtuning.com/wiki/direct_access_changes|Custom Direct Access Files]]
-==== Injector scaling and default timing/fuel maps ====
-The stock 2G DSM maps were only calibrated by Mitsubishi up to about 14-15psi.  The stock EVO8 maps were calibrated a lot further out and with a nicer "shape" to them.  We provide full details on how to configure ECMLink for EVO8 operation here, including new timing and fuel maps copied directly from the EVO8 ECU.
-[[evo8v3settings|EVO8 V3 Config Settings]]
-==== Idle switch and TPS ====
-You must simulate the idle switch via DSMlink since the Evo does not use an idle switch.  This is trivial to do on the ECU Config->RPM/TPS tab.  You will also want to [[v3tpsadj|calibrate the TPS]] too.
-===== References =====
-The following files will be most useful to someone looking to confirm the information above or to find a new way to approach some of the issues.
-[[http://www.dsmlink.com/images/forums/rreevo8pinout.pdf|EVO8 pin out]] \\
-[[http://www.dsmlink.com/images/forums/2GECUPinout.pdf|2G DSM pin out]] \\
-[[http://www.dsmlink.com/images/forums/evo8mfi.pdf|EVO8 MFI schematic]] \\
-[[http://www.dsmlink.com/images/forums/2GECUMFI.pdf|2G MFI schematic]] \\
-[[http://www.dsmlink.com/images/forums/evo8cooling.pdf|EVO8 cooling schematic]] \\
-[[http://www.dsmlink.com/images/forums/2gcooling.pdf|2G DSM cooling schematic]] \\

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