Converting 1996 PCM to '98+ or 0411?

[KAZ MotorSports]

Thanks guys.

I have a "revised" spider assembly coming the end of this week. I will be doing the assembly, PCM swap, and lower plenum gasket all in one shot.

I appreciate all the info and responses to my question.

I will post up when I am finished.

-Kenny

[KAZ MotorSports]

Having some issues guys. 1998 Vortec 411 PCM conversion. Motor is a 383 stroker with a whipple.

If I leave the Express Van OS without COS3 loaded it runs fine. As soon as I load 02020003 it will not run properly. Will not take throttle input, idles rough (lean), and just plain stalls after a few seconds. If I reflash the PCM with the Express van OS only it runs fine.

Any thoughts?

This is about the 12th COS3 I have loaded into an LS1 based PCM and never had this issue before.

I attached the .cal file. Very basic, but no run with it.

[Lextech]

Try setting P0101,P0102,P0103 to non-emissions. Are you sure you want your B3647 table to look like that?

Jeff

[KAZ MotorSports]

Ok Jeff,

I changed P0101 etc to non-emissions and moved B3647 to 0.98. It runs fine now. Normally I can start and begin setting up everything the way I had it. Why is this one different?

Thank you sir. I was severely banging my head against the wall wondering what the hell the problem was. I really need to get a heavy bag hanging from the wall to relieve my stress from time to time and help clear my head.

Thank much!
-Kenny

[Lextech]

Cool,
After 117 posts, I finally got 1 right.