I installed a supersprint exhaust on a 335i and i was not impressed at all. The quality, the fit, the finish, the sound, gains.... were all lacking heavily for such a so called "quality product." At the same time however all the headers i've installed on the m5/m6's were some of the nicest pieces i've seen. Not sure why this was the case but when i get the exhaust mostly going custom... if not milltek,dinan,bmw motorsport,etc.
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Current: 1M, M2cs
Retired: '08 135i,550GTxDrive, etc.
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