Quote:
Originally Posted by SATINSTEEL1LE
When in doubt - reboot.
Glad it worked. This is something you should do after the climates change or if you add a simple mod like a drop-in K&N airfilter or something minor. The long term fuel trims need to be leaned from the short term fuel trims. They are a running average. Same way you would want to reset your average MPG on the dash before a long highway trip. You dont want the car to have to calculate the better MPG and slowly average it up as you drive. You want the real-time calculations happening in the current condition.
Resetting the battery both cleared the learned long term fuel trims as well as the learned shifting parameters. This happened with my 21 Z. It was new, but had 188 miles on it. It ran like POOP from the dealer. I logged it with HP Tuners and saw my LT fuel trims were -25 while crusing. The car was trying to pull 25% fuel out to keep the car at stoich. And once I cleared the LTFTs with the battery pull, the car was able to learn the new fuel trims with my fresh tank of 93 and me ripping it hard. They are much better now -5 and less, so the car is not having to try as hard to run correctly based off its factory calibration. So again, glad that worked for you.
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Sorta like when you call IT. Did you try turning it off and back on again LOL