The Pride Exhaust Resonated Test Pipes for the Acura NSX are direct bolt-on for all 91-94, 95-99, 00-01, & 02-05 NSX’s. Our resonated test pipes weigh just under 9-11 lbs/pair. The small resonators incorporated into our test pipes act like a glass pack or small muffler, designed to mellow out the tone of your NSX exhaust tones. These do replace your catalytic converter. The resonators are designed to break up the sound of each combustion, generating a smoother hum and reducing any droning in the exhaust system. Our Pride Exhaust system is a pretzel-style exhaust, giving the NSX a high-pitched tone and creating performance pushing back-pressure, therefore our exhaust system loves test pipes. These test pipes will give your full system a slightly higher pitched tone and improve net system horsepower. 91-94 NSX will include gaskets on the header and exhaust side, along with 6x bolts, washers, & nuts. 95+ NSX will require a CEL Fix to prevent Check Engine Light (Sold separately for $80 additional). For off road use only.