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      10-29-2012, 11:06 AM   #10
Lieutenant Colonel
Drives: 2011 1M Coupe - SOLD
Join Date: Apr 2008
Location: California

Posts: 1,591
iTrader: (3)

I agree with everyone about putting it back to stock. That could also help rule out the aftermarket parts didn't cause it. On the HPFP, it's possible but when my pump failed the car was running horribly rough, like on one or two cylinders. It also took a long time to start so to me it doesn't sound like fuel pump problem I had. I believe limp mode is triggered by something that could damage the motor like overheating, over-lean condition, detonation, etc. The dealer is your best bet but take it in stock.

Good luck.
nachob is offline   United_States
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