well just ordered the patriot insert so I will see how much that help and I will be putting a turn down on it as well.

 

I agree that is too loud..

 

Isn't the GM exhaust made by Corsa? If so then like me you're screwed lol.. one of the loudest setups that there is. You will need a resonator or two.

 

I wish mine were louder! I have 3" in to dual 2 1/2" out flowmaster 40 series. Im thinking of doing a 4" single diesel exaust!

 

Well got the patriot insert in and damn this thing as a lot quieter now. Worked a lot better then I thought it would.

 

Did you notice any drop in power after you inserted it?

 

not really but I have not drove it much yet either.

 

If you want yours louder just go to a muffler shop and ask for the 10 Series Single chamber Flowmaster. That is the one I have ant it is loud. My vid clip is on the first page.

 

I have the 14in casing magnaflow and its not too loud it just resonates baddd... Its almost like I can feel the exhaust pulses in the cab at like 1400-1600 rpm. I think I'm gonna try a Spin Tech muffler, a sportsman street to be precise. Its their only muffler that will fit in place of my 14in magnaflow since it has a 13in casing. Their quote about it

"We have found this muffler works best on vehicles with one or no CATs. It would be used on newer vehicles with multiple CATs but might prove to be too quiet."

Which should work perfectly with my ORY pipe. They have 6 to 8 baffles however they also have flow bench comparisons with hooker aerochambers and flowmasters and the Spin Tech mufflers outflow them all by a good margin.

 

**** that insert I put in mine cut any loudness out of it.