Ecu to Injector Problem.

[Spyder4g64]

I am running a 2g Turbo ECU in my car, with a 6-bolt motor.
My car was originally non turbo, with a 4g64.
Now if im using low imp injectors with a low imp ecu, would the wiring harness make a difference?

I am asking because at constant RPM over 2500, the car will start to lean out and sound like it is running on 3 cylinders (sounds like a wrx idle)...
Im very confused here..

 

[rabenne]

This sounds like the 1g in a 2g problem that everyone must face. As you probably know when a 6 bolt is put into a 2g you have to simulate the crank angle sensor signal because 1g's dont have this, and 2g ECU's are expecting to see it. Basically sometimes the simulated signal, which is produced by the cam angle sensor and some clever wiring, isnt quite accurate enough for the ecu, and it senses a misfire. Are you getting a CEL with it? When you get this problem you will find code P0300 Random Multiple Cylinder misfire.

You can get dsmlink and turn off the random misfire code entirely - $600
or
You can buy a potentiometer from radio shack for 85 cents and wire it in (instructions in link). I used this with no problems whatsoever for about 3 months until I could afford DSMLINK

If this is your problem go here:

http://www.roadraceengineering.com/1gcasin2g.htm


Hope this helps

 

[steve]

Now if im using low imp injectors with a low imp ecu, would the wiring harness make a difference?

FYI, The injector circuit on turbo cars includes the injector resistor in series with the power feed for the injectors. The ECU drivers require the resistor when using low impedance injectors.

Steve

 

[Spyder4g64]

So wiring in a resistor pack from a 2g car should cure this problem..?