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The time and money you spend are a big investment, and we want to help you make the best decision for your driving dreams. Typically, a cat-back exhaust system will increase your car’s horsepower by somewhere between 5 and 50 brake horsepower.
2007 duramax delete kit RES is but one of many great vendors of parts for your car’s exhaust system.
The new Large Bore-HD exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4" stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's.
The only difference is that it features straight perforated pipes. The original exhaust systems focus more on just reducing the sound and not shaping it to give it that desired deep growl.
Straight-through, or flow-through, mufflers have perforated baffles and packing material that provides a conservative level of sound absorption while still keeping sound output moderately loud.
Another difference is with the material used in the cat-back exhaust system against that in stock exhaust systems. But the problem with a resonator is that it can cause restriction to the flow of the exhausts.
The difference is that the dual exhaust system has two exhaust systems on one vehicle.