MAD BMW M3 M4 G8x S58 Axle Back Exhaust x6 Up to 15HP increase

Up to 15HP increase

During our extensive dyno testing the BMS N55 Intake out performed all other available N55 intake systems posting gains of up to 10+ horsepower to the wheels

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MAD BMW M3 M4 G8x S58 Axle Back Exhaust x6 Up to 15HP increaseThe G8x M3 M4 excels in nearly every aspect compared to its precursor, but the prevailing concern among enthusiasts lies in its sound quality. Similar to its predecessor, the S55 in the F8x, the S58 in the current generation still leaves room for improvement. While the stock sounds are a step up from the previous generation, they still have an excess of raspiness that fails to convey the refined aggression inherent to the brand's signature performance