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chrisvscars chrisvscars is offline
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Posts: 2
Join Date: Sep 2020
Car: 2007 335i
Default Single Turbo 335i fuel trim problems. - 09-29-2020, 08:48 PM

Hi, so i got my single turbo 335i back about 2 weeks ago, and she drives fine, when she is at idle first thing in the morning its a little rough, but other than she drives fine.

i did a few 3rd gear logs and the car was perfect and pulled hard.

Yesterday i tried a 2nd gear pull into third and the car went into safety at around 5k rpm, and when i checked the logs i saw it was fuel trim variance.

trim one was close to 40 and trim 2 was at like 12.

Mods.
Gt35 turbo
walbro 450
FBO
BEF
JB4
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