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      02-10-2013, 10:05 AM   #6
fasteddie222
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Drives: 2011 e88 135i
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Quote:
Originally Posted by xnfsx View Post
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?
I have no idea what causes the code but you don't need to worry about it. My buddy is a BMW tech and he told me not to worry about it so I trust him. If you want email mike@n54tuning.com and he can explain to you why you get that code. Goodluck
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