JB4 N55 stutter bet. 4-5K rpm in cold weather / warming up...
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12-23-2012, 11:58 PM
Drives: white bmw
Join Date: Nov 2007
I remember asking Terry a question about the tune a few month back and he mentioned that tune is not active until the engine hits a certain temp.
If this happens during a cold start I don't think the tune is even on yet.
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