Just how much power can Supersprint exhaust headers add to an S54-powered BMW Z3M Coupe? In this video, we install a full header system and head straight to the dyno to find out. 🎧 Plus: hear that ...
We’ve fitted our BMW E46 M3 with Supersprint stepped headers, full Supersprint exhaust, and paired it with a custom Evolve ECU tune — now it’s time to hit the dyno and see the real gains. This is the ...
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