Anyone added extra mufflers after their longtube header install?
I'm considering adding 2 resonators where the stock cats were, and also a Magnaflow "2 into 2" dual inlet/ outlet muffler in the rear, just before the rear differential. I had done this with my SS sedan and it's the only way in hell to make things civil when using longtubes, even with the stock NPP system.
https://www.etrailer.com/static/imag...f12469_500.jpg |
I think my car is more than acceptable with the valves closed in the stock muffler. I do have high flow cats, which probably helps. I feel like it would be way too quiet with an extra muffler. I’d do a set of resonators if you’re catless though.
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I should have specified that this question was directed towards catless headers. |
I was JUST going to open a thread on this...lol.
With my OBX LT's, no cats and factory muffler, car sounds tinny and raspy. If I close the valves, the valves rattle. :( I think some resonators will fix the problem, but don't know what to go with. |
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Got it. I was just about to change my post to quote yours. |
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I am LT's into Kooks full decat midpipe into stock NPP. I can't even hear the exhaust while cruising at 50mph, even with the roof down!
Are you sure you dont have your NPP set open all the time? |
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I like my setup better than Scott’s. He has LT’s into stock midpipe into a Corsa axle back. Sent from my iPhone using Tapatalk |
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Not a ZL1 here, but a Whipple SS. I did cat delete pipes with all stock exhaust and HATED how it sounded, and it was embarrassingly loud. So I did the Borla ATAK system and added in their resonator in the mid-pipe, which is ceramic packed, so it wont over heat like the cats could. I am very happy with the exhaust now, and i am sure the resonator made a big difference.
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When I eventually install cat-less long tube headers I intend to run dual x-pipes into the stock muffler to quell the extra noise.
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