Hey everyone. I was wondering if any of you have had the same experience as I had with modiying my teg's exhaust system. My LS ran better with just an aftermarket muffler...when I added catback piping my times slowed down a bit. The piping size is 2.25 but is crush bent, which might be the case.... just wondering if you guys have any experience with this.

 

With a larger piping cat-back system, you will lose a little low end grunt. The bigger piping reduces backpressure some, and you will lose a few ft. lbs. of torque. The main reasoning behind getting a cat-back system is to reduce baskpressure, achieve better flow over stock, and have gains that affect more of the top end of the power spectrum(where a stock system is more likely to hinder).

 

Crush bent :down: