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Hello guys I have a 2007 BMW 335I e93 I’m starting to have an issue when on the road pushing throttle going into fourth or fifth gear it jerks for sec. I will let go of the throttle and goes back to normal I recently did transmission fluid and filter also modifications coldair intake new turbos new spark plugs New coil packs MHD stage 2,intercooler, I don’t think there’s anything wrong with the transmission because it does do smooth changes between gears. Please help thanks in advance.
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