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      06-07-2012, 09:33 AM   #1
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Turb0Surge's Avatar

Drives: BLACK e90 335i
Join Date: May 2012
Location: Lincoln, CA

iTrader: (0)

Ugh. JB+ problem.

So... I picked up a used jb+ for cheap yesterday online. Didn't wana spend the money for a jb3/4 and would have been more than satisfied with the 40 hp gain the jb+ offers.

So I install the jb+ (simple enough) and when I reconnect the battery and start the car it automatically starts shuddering and rpms start jumping. When you put it into drive it starts jerking horribly and after a few moments CEL comes on and it goes into limp mode.

The car does not have these problems when jb+ is disconnected.

Help anyone?