increase loudness
Racer
Joined: Dec 2010
Posts: 307
Likes: 4
From: Milford Connecticut
There's not much you can really do without replacing exhaust. The only thing I could think of is taking the exhaust apart behind the exhaust manifold and punching out the catalytic converts.....the car will run better and sound a little more aggressive and I never had a problem with emissions but, every state is different. I have a 94 Vette.
I found this on google image search, I think this is what mine looked like when it was stock and easy to punch out.....I did this about 8 years ago so, my memory is foggy.
I found this on google image search, I think this is what mine looked like when it was stock and easy to punch out.....I did this about 8 years ago so, my memory is foggy.
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
First the age old question that should always be in a post....WHAT YEAR CAR. It makes a difference for the muffler/pipes.
You COULD.....COULD......drill holes in the mufflers. BUT I REALLY WOULD NOT SUGGEST YOU DO THIS. It would make it louder, but you would promote the mufflers to rust out faster. Why not do it right and go with a better muffler.
You COULD.....COULD......drill holes in the mufflers. BUT I REALLY WOULD NOT SUGGEST YOU DO THIS. It would make it louder, but you would promote the mufflers to rust out faster. Why not do it right and go with a better muffler.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
If he wants LOUD , just install eliminators
http://forums.corvetteforum.com/c4-t...iminators.html
http://forums.corvetteforum.com/c4-t...iminators.html
http://forums.corvetteforum.com/c4-t...iminators.html
http://forums.corvetteforum.com/c4-t...iminators.html
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
2023 C7 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (appearance mods)
2015 C4 of Year Finalist
You can replace the center resonator with straight pipes for a bit more growl. It won't be loud, but it's a start.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
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Instructor
Joined: Mar 2012
Posts: 116
Likes: 0
From: South Lake Tahoe CA
going to high flow cats makes a difference, or just eliminate the mufflers all-together but leave the resonator in...your ear drums will thank you, especially when cruising in overdrive/6th gear!
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Any good muffler shop should charge something like $50 to remove the stock mufflers and replace them with exhaust pipe. You can even have them remove the factory tips and re-weld them on the pipes.
But as mentioned, leave the factory resonator in place, otherwise you will get a lot of interior resonance at cruise RPM (around 1200-1600 RPM).
But as mentioned, leave the factory resonator in place, otherwise you will get a lot of interior resonance at cruise RPM (around 1200-1600 RPM).
Racer
Joined: Dec 2007
Posts: 312
Likes: 0
From: San Antonio Texas
KW