Motordyne Advanced Resonance Tuning (ART test pipes) for the DE engine

Through countless hours of research and development a new path has been explored in the never ending quest for performance. A method of directly altering exhaust harmonics for enhanced performance and sound, Advanced Resonance Tuning (ART). ART pipes increase power and torque without the drastic increase in loudness normally associated with test pipes. These provide the quietest, smoothest, deepest sound of any test pipe while greatly reducing or eliminating rasp and drone. The difference in sound is not subtle. They're not conventional test pipes. They're ART pipes!