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Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
an independent lab in Ohio
By modifying ignition timing and throttle mapping
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Part No: 8508IMP
N55 vehicles
Active Autowerke F8x Bmw M3 & M4 Equal Length Mid Pipe twin turbo BOV an independent lab in OhioWE ARE RECOMMENDING TO OWNERS OF CARS WITH AFTER MARKET DOWNPIPES TO USE THE RESONATED VERSION BUT WE HAVE ONLY TESTED WITH THE STOCK REAR EXHAUST AND ACTIVE MAAD MAXX EXHAUST. WITH STOCK DOWNPIPES, THERE IS MINIMAL RASP. WE DO NOT GUARANTEE RESULTS WITH OTHER MAKES OF REAR EXHAUSTS. ORDERS ARE ALL MADE TO ORDER Active Autowerke has been an industry leader in engineering high quality BMW performance products for over 41 years. Dedicated to improving
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