Ecu programming question

[eoseitz]

Is the 1g stock binary available under official releases on the yahoo ecu group the one I should use for a 1990 fwd? I was checking the values and the rev limiter is set to 57.22. I know stock it came at 7500. Also Lean Burn/Air fuel is set to 7.38. Shouldn't it be closer to 13.7? I burned one chip and the check engine light always came on around 2500 rpm and the car slightly missed. Is this the binary I need to use.

I simply want to adjust the injector deadtime and the injector size. I have FIC 650 injectors. I believe the deadtime is 210. Can anyone point me to a stock image or maybe have an image with new fuel tables and timing that will work for me?

 

[toofast82]

Are you programming E931(91-94 code) or using E705A(90fwd)?
What xdf file are you using? I'm not sure if there is a E705A xdf available, you may have to write you own.
I believe there are a pin or two on the ecu that needs to be switched on the wire harness of a 1990 to use a 91-94 ecu. This may need to be done to properly use E931 code in a 1990 ecu.

You could also go in and manually hex edit the figures on E705A you want to change by finding the corresponding lines that match up for E931. Definitely more work though but will enable you to write you own xdf file because it probably uses the same formulas as E931, just locations may be slightly different.

 

[toofast82]

Using this page:First Generation DSM EPROM Editing
You can see the E705A code does not match up with E931
You can type the specific line in and do a hex search, which will find the correlating location on your E705a bin. You can then edit it and create a definition file on your own xdf, which will make future changes just a matter of editing the numbers in tunerpro and no longer hex.

You could also change the necessary ecu pins and probably use the E931 code as another option