Horrible surging idle
Posted: Tue Aug 29, 2023 8:01 pm
Hi guys, please bear with me as this is the first time working on a k20. The Motor I'm running in a 2006 RSX type R is a 2008 K20Z3 with Drag Cartel 3.2 cams, 11-1 compression, Manley rods, Wiseco pistons Ferrea valves in a CSS closed deck block. The car will be run NA for now. Oh yeah, I'm using Alpha Injection 1300 cc injectors in a RBC manifold. So I was able to create a tune to be able to break in the motor which turned out fine. But now I have no idea what I did and have been chasing a horrible surge problem. Every damn six seconds. I thought it was a vacuum leak or IAC issue but I have disabled the IAC and no change. Also, when I log the problem, the MAP value decreases before the surge so the vacuum is increasing not decreasing like a vacuum leak would indicate. If anyone would like to take a look at the log I've attached it.
Any help is greatly appreciated.
Joe
Any help is greatly appreciated.
Joe