Quote:
Originally Posted by DimChav19
I installed a jb4 and downpipes yesterday and now my car stars really rough, the first couple seconds it sounds good and then after a while the gnome vibrates pretty hard and then it goes rougher to where it sounds like the engine wants to stall out. I don't know if I did something wrong or what happened?
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i have a bmw 528i, no sounds but did you get the m3 engine with it? also my msport came with the m suspension.