Quieter muffler needed for my beast.
Thread Starter
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Joined: Feb 2007
Posts: 66
Likes: 0
From: Ft. Myers Florida
Quieter muffler needed for my beast.
My 07 Z06 has stock mufflers, but with over 900 HP, headers, free flow/no cats, my daily driver is just too loud at idle and has a resonating drone.
What works?
What works?
Melting Slicks
Joined: Oct 2007
Posts: 2,702
Likes: 192
From: Northwestern Connecticut
St. Jude Donor '10 thru '26
Actually putting a set of cats back in can help but likely the headers are the biggest offender. (The price to pay for max hp).
But I do recall b&b adding a resonator to the bullet exhausts to calm them down a bit, might be worth a call.
But I do recall b&b adding a resonator to the bullet exhausts to calm them down a bit, might be worth a call.
Former Vendor
Joined: May 2010
Posts: 474
Likes: 0
From: Chagrin Falls Ohio
SW has just redesigned our C6 headers and exhaust so stay tuned for some pics and NEW Video. Our new muffler design uses a similar concept to the OE type muffler but much improved flow. The end result is quiet tone with headers...hmmmm don't see that too often!!
Video coming next few days.....STAY TUNED!!
Race Director
Joined: Nov 2004
Posts: 15,678
Likes: 1,097
From: birmingham Alabama
St. Jude Donor '09 and '13
I had the SAME problem with my modified 01 SS Z28. I tried everything. Then I put a stock Z28 muffler on the car and it made a world of difference. 05-06 stock C6 mufflers will quiet the car down.
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Heel & Toe
Joined: Sep 2012
Posts: 24
Likes: 0
Corsa
I have 1 and 7/8ths headers 3 in x pipe and Corsa axle back with NO cats I am very pleased with this setup!!! almost no drone on interstate I am only making around 600 hp out of an ls2 BUT I am loving this exhaust!!! oh headers and x pipe are texas speed
Le Mans Master
Joined: Dec 2005
Posts: 7,002
Likes: 1,687
From: Southeast TX
Good luck making any cats live at 900 rwhp. Your stock Z muffs are actually a pretty good deal if you can make them live without rattles. I've done the NPP thing and it's good until the cans crack up internally. Corsa sports were the answer for me. With long tubes, no cats, cam, 9psi, they're pretty civilized at cruise. They sound mean at idle and WOT. The ability to go quiet and then stupid loud is a great concept. Just wished it worked as advertised.
Pro
Joined: Feb 2005
Posts: 652
Likes: 16
From: Upton MA
I have 03 Z06 with 905rwhp. I have Kooks 1 7/8" headers and 3" pipes.
I installed some race mufflers as described by Jegs. The mufflers are only about 12" long. I use them as resonators. I am using the stock 03 Z06 mufflers. No resonances in the car, the sound level is reasonable, I do not enjoy a loud car.
I installed some race mufflers as described by Jegs. The mufflers are only about 12" long. I use them as resonators. I am using the stock 03 Z06 mufflers. No resonances in the car, the sound level is reasonable, I do not enjoy a loud car.
Pro
Joined: Feb 2005
Posts: 652
Likes: 16
From: Upton MA
Hi I also have 900rwhp. I am using mufflers from Jegs , or Summit that are called race mufflers 3" to 3" and only about 1" long , they are located in place of the cats . They work well with stock Ti mufflers no resonances.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
I switched back from offroad to hi flow cats several years ago and the volume was embarrassingly quiet. Had to switch exhaust sytems to regain some sound. Cats will "silence" your car.