Subject	HElp! why am i running lean???
Posted by	nismo_boost31 on April 29, 2008 at 7:34 PM
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Message	Here is my situation; above 10 psi my car is running very lean. At 10 psi it’s running about an 11.8 – 12.0 A/F. Around 14 PSI 13.8 to 14.1 A/F and it starts to stumble and sounds like you’re hitting the rev limiter. I am clueless on what is causing this. I am running the twin pop single MAF with the 555cc JWT chip, and the AFC is set at zero correction. Here are the things I have checked: swapped CAS, MAF, no boost leaks, timing at 15 degrees, injectors and coil packs resistance is perfect, checked PCVs, fuel pressure is where it should be, new fuel pressure regulator, and there are no codes. This suddenly stated happening after I replaced my tranny.
Follow Ups	HElp! why am i running lean??? - nismo_boost31 19:34:25 04/29/08 Are these WBO2 readouts at WOT for each PSI? - ThunderZ 21:51:54 04/29/08 Yes, those are WBO2 readouts at WOT - nismo_boost31 09:42:25 04/30/08 Bypassed AFC, still lean (n/m) - nismo_boost31 15:52:04 04/30/08 This is tough. I can't imagine what could have happened - ThunderZ 18:48:02 04/30/08 Yeah I'm puzzled - nismo_boost31 22:31:05 04/30/08 At WOT, the ECU is reading off maps, so ruled - ThunderZ 19:12:41 05/01/08 Ran a 40% corr and it still ran lean - nismo_boost31 13:36:54 05/03/08 I was thinking injectors, but you might be right. You - ThunderZ 17:19:06 05/04/08 dual pop single maf eh? - kickerzx 14:02:04 04/30/08 True But..... - nismo_boost31 15:57:23 04/30/08
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