Lingenfelter GT 1-1 cam tune issue..
04-28-2012, 02:33 PM
#1
Lingenfelter GT 1-1 cam tune issue.. 2000 WS6 CAI headers exhaust and a LPE GT 1-1 cam. specs are 229/242/114.5 with .631 in/ex. My tuner did a great job so far. when he tuned it it ran with the ac on and off. couple weeks later it started cutting off if i turned into a parking place and went in reverse and also if at idle with ac on it cut off. I took it back and explained the problem. He played with the tables some more and viola. ran like a champ again. now weeks later.. same issue. and exhaust smells really rich. is something wrong or is the tune wacked out. any help is greatly appreciated. no other engine mods. just the cam. stock heads.
04-28-2012, 07:06 PM
#2
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Do you have any exhaust leaks? A common problem is that exhaust leaks are seen by the O2 sensors making the PCM think the engine is falsely lean - the LTFTs will then richen up the mixture with un-needed fuel... have your tuner check the trims at low rpm driving and idle - that is the operating area that exhaust leaks effect. If you have any, you gotta fix them.
