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drwillb drwillb is offline
Junior Member
Posts: 215
Join Date: May 2016
Car: 2012 n55 135i
Default 02-14-2019, 07:26 PM

Originally Posted by Terry @ BMS
28A0 and 2C90 are caused by a variety of issues but most often menu10 or menu12 set too high building "too much" boost at low throttle.
Terry, thanks for checking in.

Looking through a bunch of other threads, I had come to the same conclusion. I then dropped menu 10 and 12 to 2000 and still had the same codes pop up. I then dropped menu 11 to 2000 as well, thinking that too much throttle response might lead to a boost spike. That didn't help, either.

At that point, the car had lost any kind of snap since turbo lag had set in so I just put menu10 and 12 back to 2400 and menu11 back to 2800.

Very frustrating.

2012 135i Mods: air scoops, CP, BMS filter, PS1, ADE FMIC, BMW PE, JB4, 1M front body, full M3 suspension
Owned so far: 88 M3 x 2, 95 325is, 95 M3 x 2, 06 Mini Cooper S, 08 335 xi, 09 Z4 35i, 01 M3, 12 135i
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