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View Full Version : cant get LTFT bellow 18%



bifster
June 10th, 2007, 12:27 PM
every time i hit 30 KPA map pressure the LTFT goes right back up to 18% do i have to add or remove from the VE table to fix this and get it back down closer to 4% LTFT???

joecar
June 10th, 2007, 02:14 PM
Do you have DFCO enabled...?

bifster
June 10th, 2007, 02:15 PM
yes its enabled does that make a difference?

joecar
June 10th, 2007, 02:26 PM
DFCO cuts off fuel when decelerating (30 kPa and lower with closed throttle), O2 sensor detects lean, so PCM may be correcting by increasing the trims positively.

bifster
June 10th, 2007, 02:28 PM
i thought the long term trims should be close to 5% or 0 when you get things close??

joecar
June 10th, 2007, 05:28 PM
Can you post your logs and your tune...