Originally Posted by
carlrx7
ive played around with it a little,
made CFCO and DFCO more adgressive, and put car in open loop and removed 10% from the maf or ve tables under the cruise and idle areas.
engine would run around 16 afr or lambda 1.09, anything leaner and i could hear it ping. didn't mess with any timing.
no long term mesurments, but thats what i started with.
there are other ways i think, some mess with the o/l tables but i think they only make it richer, not leaner.
another method would be to run 87 octane and pull timing, but that goal only saves $$$ at the pump and reduces performance significantly. maybe you could try both?
some pcms have a lean cruise mode as well. mines a 4th gen pcm, just my 2cents.
-Carl