Thread: PO299
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      02-09-2013, 04:50 PM   #1
Madill21
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Drives: '08 335i - BMS DCI, JB4
Join Date: Oct 2012
Location: Dallas, Ga

Posts: 98
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P0299 error code, need help!

Turbocharger/supercharger 'A' underboost condition

Hey guys. Can anyone enlighten me as to what this actually means and what needs to be done about it.
I'm running a JB4 on map 5 with a DCI only on 93 octane. The car puts me into limp mode when I'm WOT in 3/4 gear and reaching 4500+ rpm.
Doesn't happen with half throttle or anything.

I appreciate your input ahead of time!
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J.D.

2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT
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