I installed mine last night, and no issues what so ever, I let the car warm up all the way then took it out for a drive, did a couple higway pulls from 2 to 5k rpms and felt the difference, and a few revs here and there. Took it out this morning and running good, I can hear the blow off a bit over my exhaust. Cant wait to let it rip later this week. I want the ECU to adapt before it gives me any codes.
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2011 550i
2013 M5
2014 M5 CP
2016 550i
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