Okay, so my friend Ben, who helps me a lot with the megasquirt stuff comes back from my rival University (WA State), and figures out my idle issues in about 20min.
So this post is for future people looking for things to check while diagnosing an idle problem.
After playing with the Spark and fuel map trying to get my car to idle correctly, I got it to a point where it would idle around 700-900rpms, only problem is that it would have a droopy type of idle where it sounds like its missing.
Ben noticed that when we weren't touching anything on megasquirt, the injector pulsewidth was fluctating from 1.6-1.7 (where it idles good), to 2.3-2.5 for a split sec (where it droops or misses).
We checked the TPS signal, and noticed that it was kind of fluctuating as well around 0.0-0.2, but the affect this had was causing the megasquirt to go into an accelertion enrichment map for a split second and then back to normal. So we bumped the TPS threshhold to 0.9, and now the missing and droopy idle is gone. And maintaining a steady idle is now determined by the ramp effect in my spark table.
(pictures soon to come)
