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extreme negative fuel trims
Hello guys i've had issues where the car runs extreme negative LTFT at -20 to -35 on both banks and the car runs pretty rough on idle and i get constant small pops and crackles everytime i let off the gas. No codes whats so ever and car still answers good when i actually floor it with no missfires or anything. Changed O2 sensors and high pressure sensor but that did nothing. Do i have a bad HPFP?
Big thanks for any advise
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2SS A8 D1X Stage 2, 3.7 pulley, Kooks LT 2″, Borla XPIPE/ GPI drop ins,Caddy Racing Lifters, ATI Damper, LPE GT35 Cam 42%, LPE Big Bore, FIC 30% Injectors, Fore Twin intank pumps, Flexfuel, MM wild catchcan.
865 WHP 743 LB FT
2Forge 19" wheels daily, Forgestar D5 17" for track
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