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LTFT variance between banks
Posted: Tue Aug 07, 2007 10:00 am
by stickers
I just started doing some tuning with my U7193, ver 1.11 (very old, I know), and my LTFT's for bank 1 is -2.47, bank 2 is -5.6. Is this normal to have a difference this great between the 2 banks, or is bank 2 running rich for some reason?
I appreciate the help.
John
RE: LTFT variance between banks
Posted: Tue Aug 07, 2007 10:03 am
by stickers
Forgot to add: car is an 04 GTO, LS1. No mods other than MAF screen removed and IAT relocated to stock airbox.
RE: LTFT variance between banks
Posted: Tue Aug 07, 2007 10:32 am
by mikel
How many miles are on this car?
Make sure your fuel system is up to par, and the fuel filters are clean.
Check your spark plugs and ignition system, and monitor your O2 sensors to be sure they are functioning properly.
Thanks
Posted: Tue Aug 07, 2007 10:48 am
by edv2122
How long are you monitoring the fuel trims? I would see that with mine also but with enough steady driving (cruise control) they would fall into line relatively close if not even.
Posted: Tue Aug 07, 2007 1:14 pm
by stickers
thanks, i was thinking about the plugs. the car has 36k on it, and the plugs may be fouled.