I have a 2002 silverado w/ a 4.8. I am thinking about gettin this exhaust and im wondering if anyone has this and how they like it. hp gains, sound? thanks

 

I've got the Gibson single out (like stock) and am very happy with it. No droning or excessive noise but a nice tone at 1/2 to WOT. Very quiet stock and cruising.

I wasn't very happy with it the first day as it was causing some strange rattle/drone, but that disappeared after about 25 miles worth of driving and its been flawless ever since.

 

I have the gibson super truck exhaust. It has a very cool sound "unique" It is loud however, but it gave me a very noticable power gain. although I never tested it alone, between it and a air raid kit I gained .4 in the quarter mile 15.9- 15.5. Well worth the money. The sound gets everyones attention!! also picked up 1 mpg

 

I have the dual rear cat back and headers, both in stainless. I had the aluminized cat back on for 3 years till it rusted out. Go with stainless. They're warrantied against rust. The other companies that have cat backs and shorty header don't offer stainless. They cost more, but them will last.

 

i had the gibson super truck exhaust last year. still have all the piping to it but i cut off the muffler and welded in a dynomax ultraflow instead. The gibson was good, but its a pretty restrictive muffler, especially when your considering an ultraflow

 

gibson makes decent cat back systems< good sound/performance >, but stay away from thier headers, they are a waste of $$$. you would be lucky to get 5 rwhp with them.