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Originally Posted by mtbendo
The November issue of Sport Truck magazine has an article on adding a Gibson exhaust (3" in/3" out) to their project truck. Their dyno numbers were a 12 hp/13lb-ft increase from stock.
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what was the the project truck? chevy?
sounds about right to me with my sweptside single. It has quietened down a lot but for the price, noise at low speed, and gibson promise, you'd expect a lot more. I'm on the edge of taking it off and going back to stock.
juma