The chart below shows total exhaust back pressure at full throttle and compares the standard exhaust (9.6 psi back pressure) to the APS muffler high output replacement (6.8 psi back pressure and APS high output exhaust system (an outstanding 3.5 psi). 

Careful attention to tube diameter, smooth radius mandrel bends and muffler design is essential for high performance. With 20 years of experience in exhaust system design, we have built a superb exhaust system. 

Careful attention has been paid to exhaust noise and note without compromising outright performance. 

Full stainless steel construction ensures maximum performance and durability.