Here is a quick sound sample of the before and after of a resonator delete. The stock exhaust goes: {1st catalytic converter on the down pipe} {2nd catalytic converter} {1st resonator} {2nd resonator} {Muffler}. My current exhaust is: {1st Cat} {2nd Cat} {Muffler}. It is simply a matter of replacing the resonator with straight pipe of the same size. You might hear people claim hp gains, but the stock resonator is a straight pass through, so replacing it with another straight pass through pipe does not reduce back pressure. The benefit is merely auditory.

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