Using my VIN i was able to get ahold of the stock program with upgrades (thanks tomer) for my 94 LT1 M6 (no mods). Stock program runs like crap if you ask me, but it did solve a high nox problem and egr malfunction. Now I have the other problem and can't seem to find the issue. High in HC and high in CO see attached image.

Looks like it is running a bit rich maybe. There is a lifter in one cylinder that sounds like it could use replacing, but other than that no apparent issues. Cat has only 1000 miles on it, brand new O2 sensors. Skipshift off and fans early on only adjustments over stock.

Does anybody know what I can adjust in the ECM tables to tune this HC/CO issue out?

On another quick note, anybody want to share their tables with me with improved spark and performance? Would love to do some comparisons.

BigWil

 

Nobody has any ideas at all? Crap.