Cat-back exhaust system kits come standard with tailpipes, a performance muffler and c3 corvette long tube headers exhaust tips. The inclusion of our wider, mandrel-bent tailpipes means cat-back exhausts are your go-to for increasing your performance gains along with boosting your sound. While horsepower and 2011 f350 delete kit torque gains vary from vehicle to vehicle, 2004 duramax egr delete kit you can expect anywhere from a percent gain in horsepower and torque after installing a cat-back exhaust system.

These look like standard mufflers with a VERY unusual side entry