The latest addition to the BMW M-series is the awe-inspiring M3 / M4 , an exquisite high-performance car that can be made even better by adding an Akrapovic Slip-On exhaust system. Made from titanium with some cast parts in Akrapovic’s own foundry. It comes with a larger pipes than the stock exhaust, yielding lower back pressure and more power, especially at lower RPMs. This system is a completely new design, and will make a significant difference in reducing the weight compare to the stock exhaust system and will deliver extra power and a sporty sound, which has been tailored to highlight lower frequencies and increase the listening enjoyment. Increases in both power and torque add to the sensory experience, combined with improved agility. The look of the Evolution system can also be further enhanced by adding titanium or carbon tailpipes and the stunning carbon fiber rear diffuser. In-depth engineering has produced a sound distinctly different from the stock system, giving a deep and sporty sound with no unwanted overtones or drone, and also a significant change to the sound with the valves in the open or closed positions. The complete system needs no re-programming of the ECU because it doesn’t trigger any warning lights.