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• Improves 0-60 times and 1/4 mile times• Preloaded with custom JB4 BMW tuning software and up to 8 maps for various fuel and modification levels• Ethanol (E85) compatible tuning maps• Able to read/delete fault codes• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app
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Active Autowerke F8x Bmw M3 & M4 Equal Length Mid Pipe Variant:Straight Mid Pipe • Improves 0-60 times andWE 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
