The COBB Tuning Stainless Steel 3” Turbo Back Exhaust is engineered to be everything the Mitsubishi EVO needs in an exhaust system -- a complete, truly engineered system, that offers optimal performance, tasteful looks, and unparalleled durability without a loud and obnoxious exhaust note.The system is offered with a high flow catalytic converter, or no catalytic converters, in the test pipe section. This is a direct fit replacement to the stock exhaust unit without the need for spacers to lower the factory bracing.
Sound Measurement Data:Stock DP & Cat with Cobb cat-back - idle - 80db SAE J1169 - 88db Cobb DP, Stock Cat, Cobb cat-back - idle - 79db SAE - 93dbCobb DP, Cobb catless test pipe, Cobb cat-back - idle - 83db SAE - 98dbCobb DP, Cobb high flow cat pipe, Cobb cat-back - idle 80db SAE 94db