C7 Mufflers
Thread Starter
Heel & Toe
Joined: Aug 2014
Posts: 19
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C7 Mufflers
OK , for the guys who have removed the mufflers from your 2014 c7, was there a big difference in sound afterwards ? Was it worth removing them ? And did it trigger any codes ? Thanks for the info...
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
I'm sensing a group of overly-familiar pictures about to be posted to this thread...
OP, no codes will be triggered. You may have recorded DTCs (not MILs/CELs) if you have NPP and remove the valves, but it sounds like you're talking about the normal system.
OP, no codes will be triggered. You may have recorded DTCs (not MILs/CELs) if you have NPP and remove the valves, but it sounds like you're talking about the normal system.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
You're fine - it's kind of a forum joke at this point, but not about you or your post. 
OP on forums stands for "Original Poster", so in this case, that's you.
On the NPP, it does certainly sound quite a bit different when lopping them off. Have you considered other (less permanent or invasive) modifications like a catless X-pipe to increase your volume?
OP on forums stands for "Original Poster", so in this case, that's you.
On the NPP, it does certainly sound quite a bit different when lopping them off. Have you considered other (less permanent or invasive) modifications like a catless X-pipe to increase your volume?
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Worst case, assuming it's still not loud enough for you, you can move on to more drastic modding.
I would sooner suggest buying a new exhaust system (Corsa Extreme, for example) than hacking apart your factory NPP system. Those systems are quite expensive, and have a good resale value - believe me, I had to buy one for testing on my project. Not fun.
I would sooner suggest buying a new exhaust system (Corsa Extreme, for example) than hacking apart your factory NPP system. Those systems are quite expensive, and have a good resale value - believe me, I had to buy one for testing on my project. Not fun.
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Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I had to give up that habit after half of my car was changed over.
Melting Slicks
Joined: Sep 1999
Posts: 2,305
Likes: 87
From: Richmond, BC, Canada
jdecker,
check out my posts (#8, #16, #18, #20, #24) in this thread where I show the removal, and a video of the sound, and my comments about the loudness.
https://www.corvetteforum.com/forums...-exhausts.html
check out my posts (#8, #16, #18, #20, #24) in this thread where I show the removal, and a video of the sound, and my comments about the loudness.
https://www.corvetteforum.com/forums...-exhausts.html
