removing mufflers
Thread Starter
Instructor
Joined: Aug 2011
Posts: 133
Likes: 2
removing mufflers
Has anyone removed their mufflers completely, and just run straight pipes? At an early December run, there was an owner who did this. I spoke with him breifly, and liked the way the car sounded.
Here's the issuue. Wife's car 2010 C6. Completley stock. Automatic. 11,000 miles in the last year. Will be typical. She never drives over 80 mph, or over 3,000 rpms. She typically gets on it hard (for her) from a stop and then cruises. Wants it to sound better. Has the factory dual system. I don't see a need for thousands of $ for modifications she will never use.
Jerry
Here's the issuue. Wife's car 2010 C6. Completley stock. Automatic. 11,000 miles in the last year. Will be typical. She never drives over 80 mph, or over 3,000 rpms. She typically gets on it hard (for her) from a stop and then cruises. Wants it to sound better. Has the factory dual system. I don't see a need for thousands of $ for modifications she will never use.
Jerry
Burning Brakes
Joined: Nov 2008
Posts: 940
Likes: 1
From: Long Island NY
I have not, but others have. You're going to get mixed reviews from the group here, but most will tell you not to do it saying the drone will drive you crazy, especially with an automatic. It won't be exactly the same but you could remove the mufflers and over axle pipes and take it around the block to see what you think.
Le Mans Master
Joined: Dec 2004
Posts: 5,492
Likes: 808
From: West coast CA
Has anyone removed their mufflers completely, and just run straight pipes? At an early December run, there was an owner who did this. I spoke with him breifly, and liked the way the car sounded.
Here's the issuue. Wife's car 2010 C6. Completley stock. Automatic. 11,000 miles in the last year. Will be typical. She never drives over 80 mph, or over 3,000 rpms. She typically gets on it hard (for her) from a stop and then cruises. Wants it to sound better. Has the factory dual system. I don't see a need for thousands of $ for modifications she will never use.
Jerry
Here's the issuue. Wife's car 2010 C6. Completley stock. Automatic. 11,000 miles in the last year. Will be typical. She never drives over 80 mph, or over 3,000 rpms. She typically gets on it hard (for her) from a stop and then cruises. Wants it to sound better. Has the factory dual system. I don't see a need for thousands of $ for modifications she will never use.
Jerry
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
I have the B&B Bullets on my 05 automatic, which is strait pipes and 4 shiny 4" tips. Its loud, its mean, and it gets a lot of attention. YES there is a drone but I dont care, turn on the tunes and the drone disappears. YES I daily drive my 05, it has 95k miles and counting.
The problem I have with removing the muffler is the H-pipe will be aiming that hot air right at your transmission and rear differential. You'll be heating up your transmission and could (over time) cause gears to slip.
Maybe you should consider doing the muffler mod to your NPP system. you'll cut an opening in the side of the muffler, then take a section of pipe that has been sliced open long ways like a hotdog bun. That section of pipe will be wrapped around the NPP pipe inside of the muffler and welded in place, then you weld the opening closed. The pipe inside the muffler looks like swiss cheese, this mod will make is a solid strait pipe.
The problem I have with removing the muffler is the H-pipe will be aiming that hot air right at your transmission and rear differential. You'll be heating up your transmission and could (over time) cause gears to slip.
Maybe you should consider doing the muffler mod to your NPP system. you'll cut an opening in the side of the muffler, then take a section of pipe that has been sliced open long ways like a hotdog bun. That section of pipe will be wrapped around the NPP pipe inside of the muffler and welded in place, then you weld the opening closed. The pipe inside the muffler looks like swiss cheese, this mod will make is a solid strait pipe.
Last edited by Tikiman12; Dec 21, 2011 at 11:58 AM.
Burning Brakes
Joined: Nov 2008
Posts: 940
Likes: 1
From: Long Island NY
When the OP spoke of running straight pipes I would think that meant replacing the mufflers with pipe only, still exiting out the back. I would not suggest using the car long term with the exhaust ending before the rear axle.
Burning Brakes
Joined: Dec 2008
Posts: 1,068
Likes: 1
From: Tuscaloosa Alabama
1-7/8" Kooks here to Catless 3" X pipe to 3" (Z06) B&B Bullets to 4.5" ovals. Loud, Mean, Drone, Badass. Its all or nothing on my LS2.
Dont make it sound like a redneck truck.
Spend a few bucks and buy a catback if nothing else.
Dont make it sound like a redneck truck.
Spend a few bucks and buy a catback if nothing else.
Thread Starter
Instructor
Joined: Aug 2011
Posts: 133
Likes: 2
muffler removal
The system I saw and heard had the piping to the rear, and retained the stock tips. Simply cutoff from above the axle to the tips.
I'm now thinking I should add a three point connection so I could switch back and forth between the two. Or at least put it back if she did not like it.
Jerry
I'm now thinking I should add a three point connection so I could switch back and forth between the two. Or at least put it back if she did not like it.
Jerry
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_Sloth Whisperer_
Joined: Jul 2008
Posts: 3,369
Likes: 9
From: Malaysia Air Flight 370
Straight pipes sound like hot mess. Or your nephew's hand-me-down 85 Silverado after he hack-sawed the exhaust off at the merge collector.
I ran straight pipes for about 3 days while I waited for a new exhaust to show up. I swapped to a Z06 diff that has a slightly different casing. The stock over-axle pipes I was using would not go back on due to clearance issues. I immediately bought a Z06 over-axle set and drove straight piped in the mean time until it showed.
It was pretty ridiculous, and driving the car was almost embarrassing. The attention you get will not be largely positive. And this is coming from a guy who runs no cats, long tubes, and an SLP Loudmouth, so it's still very loud. It at least sounds somewhat restrained now though.
Just swap the stock mufflers out for a welded-in set of dynomax bullets or similar if loud and cheap is what you're after.
I ran straight pipes for about 3 days while I waited for a new exhaust to show up. I swapped to a Z06 diff that has a slightly different casing. The stock over-axle pipes I was using would not go back on due to clearance issues. I immediately bought a Z06 over-axle set and drove straight piped in the mean time until it showed.
It was pretty ridiculous, and driving the car was almost embarrassing. The attention you get will not be largely positive. And this is coming from a guy who runs no cats, long tubes, and an SLP Loudmouth, so it's still very loud. It at least sounds somewhat restrained now though.
Just swap the stock mufflers out for a welded-in set of dynomax bullets or similar if loud and cheap is what you're after.
Racer
Joined: Oct 2008
Posts: 415
Likes: 5
From: Owensboro Ky
St. Jude Donor '11
I'd try straight pipes before spending the coin on something you might not like. I have stingers and I'm not happy with the sound at all!!! My old 2000 z71 with straight pipes sounded wayyy better than my 2008 vette. I know all of this is subjective but the stingers cost over 1000 dollars and I think they're quite
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Racer
Joined: Oct 2008
Posts: 415
Likes: 5
From: Owensboro Ky
St. Jude Donor '11
Safety Car
Joined: Dec 2009
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I know... I run a catless z06 system dumped before the axle... loud as hell
I'm just asking if he has the controller yet since that would add sound at his mentioned low rpm range without going to the extreme of straight pipes
I'm just asking if he has the controller yet since that would add sound at his mentioned low rpm range without going to the extreme of straight pipes
Le Mans Master
Joined: Jun 2009
Posts: 6,724
Likes: 652
Uhhhh.......yes they are 
When you fired your's up in the garage it was a bit startling to hear it bark like that when you rev the engine
I was suprised how mean sounding the straight pipe was...but then again, you've got longtubes and no cats
When you fired your's up in the garage it was a bit startling to hear it bark like that when you rev the engine
I was suprised how mean sounding the straight pipe was...but then again, you've got longtubes and no cats