Exhaust modifications are normally one of the most common aftermarket upgrades that you might want to do on your car. The three biggest factors that influence purchasing of aftermarket exhaust systems are aesthetics, sound improvement and performance gain. Changing to a titanium/ stainless steel muffler or tail pipe design for example adds that sporty look to your car, and also makes your exhaust the focal point in the appearance of the vehicle. Louder and deeper sounding exhausts also attract a lot of attention to your car, and as the driver himself, it might be an adrenaline boost and music to his ears. Performance gains are also very important to some drivers who are starting their tuning journey. This is because aftermarket exhaust systems provide smoother bends/ straighter pipes which means that there will be lesser air flow restriction; achieving more efficient air flow and better performance.