modify muffler?
Thread Starter
Instructor
Joined: Dec 2016
Posts: 209
Likes: 40
From: Belen New Mexico
modify muffler?
Ok, fellow members. I would like your opinion. I'm 70 years young and this quiet exhaust on my 2005 C6 is killing me. Should I do the muffler delete or drill holes and modify the mufflers. Spending hundreds of dollars on new mufflers is just not an option.
Drifting
Joined: Mar 2016
Posts: 1,665
Likes: 128
From: Wilson, TX
St. Jude Donor '17
If you want a lot of noise, try the BB Bullets, but the highway drone drove me crazy. I went back to the factory NPP exhaust. I love it. Noise when the baffles are open and if you want it quiet, it turns them so they're closed.
Race Director
Joined: Apr 2007
Posts: 16,023
Likes: 1,645
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021
I drilled holes and am happy going that route. I have a coupe and there is a little bit of drone at 1500 rpm.
Last edited by Mad*Max; Apr 15, 2017 at 01:24 PM.
Le Mans Master
Joined: Sep 2006
Posts: 9,593
Likes: 959
From: Palm Harbor not far from Sebring Florida
St. Jude Donor '11
Oldtimer
Try the muffler mod first. If that is not loud enough, then go with the muffler delete, but expect a lot of drone from what I have read.
Here is the link, https://www.corvetteforum.com/forums...ler-mod-7.html
Pro
Joined: Apr 2012
Posts: 584
Likes: 13
From: Eugene Oregon
I am with you on the stock system. I wanted to hear the exhaust. It is not a Toyota. I went the expensive route but I also considered the drilling process on the stock mufflers. I assume you read through the long thread on the process? Give that a try, before going to the delete option would be my advice.
Racer
Joined: Feb 2006
Posts: 389
Likes: 70
From: VA
I have been at 3/4" for 4 years and am able to now hear the engine at idle and not too loud at speed.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Race Director
Joined: Jul 2005
Posts: 12,018
Likes: 3,555
From: Central MO
I did the muffler mod on the 07 coupe I owned and it sounded decent. I drilled a 1" hole and would have gone a little smaller if I had it to do over again due to a small amount of drone between maybe 1600-1800 rpm. It wasn't enough to be annoying but I prefer no drone.
Burning Brakes
Joined: Jul 2011
Posts: 781
Likes: 184
From: Myrtle Beach South Carolina
I had a local muffler shop remove my stock mufflers, cut off the stock tips, bent pipe and welded my tips back on my 08 coupe. 65$! Best and least expensive mod I've ever done. I've taken the car on several trips on the interstate and don't have a problem with drone. At 55 you can hold a conversation at normal levels and honestly, I done hear any drone. Just my .02 cents.
Thread Starter
Instructor
Joined: Dec 2016
Posts: 209
Likes: 40
From: Belen New Mexico
Thanks for all the input guys! I just got back from test drive after drilling 1" holes through the inner pipe. Not bad at all, sounds a lot better if I leave the 1 1/4" hole open in the outer skin of muffler. Was able to do it with car on the ground. Very, very easy to do, even for a 70 year old. Will live with this for awhile before I decide on muffler delete
Team Owner
Joined: Dec 2003
Posts: 21,840
Likes: 140
From: When all is said and done... there is a hell of a lot more said than done. Riverside,Texas
St. Jude Donor '05 thru '26
Thanks for all the input guys! I just got back from test drive after drilling 1" holes through the inner pipe. Not bad at all, sounds a lot better if I leave the 1 1/4" hole open in the outer skin of muffler. Was able to do it with car on the ground. Very, very easy to do, even for a 70 year old. Will live with this for awhile before I decide on muffler delete