SES Code p0171 ,p0174, Help!
Thread Starter
Teching In
Joined: Mar 2009
Posts: 29
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From: Yorba Linda, CA
SES Code p0171 ,p0174, Help! Ok so back round of my car is that its 2002 ws6 firebird trans am, it has slp lid to ported maf, to stock ported throttle body, and a slp 2 loudouth...the very last mod i did was port and polish my throttle body and ever since then the SES light went up...i got my diablo tuner today and ran the diagnostics option and it told me that my car was running too lean in both banks (code p0171,p0174)... is this because of the throttle body being ported? because it happened directly after that or something else?...what should i do??? i do have a diablo if that helps adjust anything?? anything and everything will help....
Thanks!
Thanks!
Thread Starter
Teching In
Joined: Mar 2009
Posts: 29
Likes: 0
From: Yorba Linda, CA
well in updated news about this topic...to anyone new to the ls1 game you cannot run a ported throttle body and a ported MAF together w/ slp lid and smooth bellow (basically you pick one or the other) without it being tuned to the because it is too much air and runs too lean....that is all....
