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Flapper valve


Nasty

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It will be on any GM truck, SUV that you can use. There has got to be one in a Salvage yard close by. If not try www.car-parts.com It is a listing of all salvage yards across the U.S. You can find one close by if not then one will probably have one and can mail it to you.

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I will try carparts.com. but I'm not kidding you. There are 2 salvage yards somewhat near me. And the newest thing I've seen was a 2004 Tahoe. We don't get the good stuff here unless you need Toyota parts.

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Best spot is your local muffler shop. When I was looking at options for a new exhaust system (I settled on a dealer installed GM Borla) my local muffler shop guy had about half a dozen old systems with flappers thrown in a big pile behind his shop. Apparently they cut them out almost every day.........

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Get a muffler with no drone. I cut my flapper and resonator added a Borla xr-1 and don't get any drone....If you want something quite there's other options as well

 

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That's the thing. I had an xr1 with resonator and I had some drone. I now have a carven tr with resonator. No drone but it's still a bit to quiet. I'll look around

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That's the thing. I had an xr1 with resonator and I had some drone. I now have a carven tr with resonator. No drone but it's still a bit to quiet. I'll look around

Wierd. I get very little drone with my set up. I had a shop trying to sell me on a Carven but I have had alot of good luck with Borla so I didn't want to test foreign waters

 

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The borla and carven tr sound very similar to me. But the tr had a little more gurgle. I really like it

Yeah from the videos and the cars the shop showed me it sounds good. I would've gave it a shot but I already had the Borla installed I wasn't going to take out a brand new muffler spend more money when I was happy with the Borla. Good luck with your truck.... But I would keep in mind that a flapper will quite it down some. So it kinda defeats removing the resonator.

 

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