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      02-02-2013, 04:08 PM   #5
xnfsx
Lieutenant
27

 
Drives: 335i M-Sport
Join Date: Jan 2012
Location: NY


Posts: 568
iTrader: (3)

This is a great thread. Good thing you posted this. I just got 28A0 today. I took off my downpipe and everything. Do you know what causes this code? Is it just over pressure since jb4 tunes it past stock psi?