Eliminating Mufflers - Affects Performance?
Burning Brakes
Joined: Dec 2006
Posts: 782
Likes: 0
From: Ga
let me tell you something if i may. my 91 l98 had flowmaster muffs.
on when i got it. complete with rusted holes and no baffles inside. everyone told me the car would be soooo loud doing muff. elim. even with the stock cats in place. well i did it any ways. the sound is perfect, NOT too loud! my exhaust is stock other than that. even the wife loves the sound, no resonance inside. best mod i ever did. its cheap and looks good.
DO IT!
on when i got it. complete with rusted holes and no baffles inside. everyone told me the car would be soooo loud doing muff. elim. even with the stock cats in place. well i did it any ways. the sound is perfect, NOT too loud! my exhaust is stock other than that. even the wife loves the sound, no resonance inside. best mod i ever did. its cheap and looks good. DO IT!
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
let me tell you something if i may. my 91 l98 had flowmaster muffs. on when i got it. complete with rusted holes and no baffles inside. everyone told me the car would be soooo loud doing muff. elim. even with the stock cats in place. well i did it any ways. the sound is perfect, NOT too loud! my exhaust is stock other than that. even the wife loves the sound, no resonance inside. best mod i ever did. its cheap and looks good. DO IT!
on when i got it. complete with rusted holes and no baffles inside. everyone told me the car would be soooo loud doing muff. elim. even with the stock cats in place. well i did it any ways. the sound is perfect, NOT too loud! my exhaust is stock other than that. even the wife loves the sound, no resonance inside. best mod i ever did. its cheap and looks good. DO IT!
I'm still waiting for mine to be "too loud". I guess I'll just have to see how that new cam will sound. 
Racer
Joined: Dec 2006
Posts: 325
Likes: 2
From: Chattanooga TN
"butt-dyno" testimonials are notoriously unreliable, fueled more by wishful thinking, than reality.
as for removing the mufflers, why bother.... theres generally little, if any real power gains.
and your car will be obnoxiuosly loud.
besides, as far as i`m concerned, anybody who drives around on the street with a loud exhaust, deserves a noise citation from every cop they run across...
as for removing the mufflers, why bother.... theres generally little, if any real power gains.
and your car will be obnoxiuosly loud.
besides, as far as i`m concerned, anybody who drives around on the street with a loud exhaust, deserves a noise citation from every cop they run across...
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
I went from stock mufflers to magnaflows and could not tell any difference in power. Now this is based on time slips. IMO there is nothing, powerwise to be gained cat back on a LT1. Sound yes, but again, the power to be gained is in long tube headers. Do mufflers or eliminators for sound.
Drifting
Joined: Aug 2004
Posts: 1,430
Likes: 2
I went from stock mufflers to magnaflows and could not tell any difference in power. Now this is based on time slips. IMO there is nothing, powerwise to be gained cat back on a LT1. Sound yes, but again, the power to be gained is in long tube headers. Do mufflers or eliminators for sound.
Thread Starter
Burning Brakes
Joined: May 2006
Posts: 904
Likes: 0
From: Boynton Beach FL
I guess I'm gonna pull the trigger... I just want some extra noise, and the performance thing looks like I'm not gaining or losing anything.
If it proves to be too loud, i can always slap on some flowmaster junk, or get a nice Magnaflow system.
Hopefully tomorrow I'll have a little more growl in the rear
If it proves to be too loud, i can always slap on some flowmaster junk, or get a nice Magnaflow system.
Hopefully tomorrow I'll have a little more growl in the rear
Le Mans Master
Joined: Oct 2004
Posts: 7,706
Likes: 485
From: Everett WA
C4 of Year Finalist (appearance mods) 2019
If you want a bit more torq put on a set of long tube headers.
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Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
"butt-dyno" testimonials are notoriously unreliable, fueled more by wishful thinking, than reality.
as for removing the mufflers, why bother.... theres generally little, if any real power gains.
and your car will be obnoxiuosly loud.
besides, as far as i`m concerned, anybody who drives around on the street with a loud exhaust, deserves a noise citation from every cop they run across...
as for removing the mufflers, why bother.... theres generally little, if any real power gains.
and your car will be obnoxiuosly loud.
besides, as far as i`m concerned, anybody who drives around on the street with a loud exhaust, deserves a noise citation from every cop they run across...
If it's TOO LOUD...
You're TOO OLD...
just kidding...to each his/her own, I guess.
I prefer loud and my muffler eliminators are just right IMO...although they "may" be a little too loud this Spring with longtubes and a point and a half more compression...lol.
http://www.youtube.com/watch?v=WM3XgbbdhZQ
Last edited by rel3rd; Feb 1, 2007 at 05:03 PM.
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
"butt-dyno" testimonials are notoriously unreliable, fueled more by wishful thinking, than reality.
as for removing the mufflers, why bother.... theres generally little, if any real power gains.
and your car will be obnoxiuosly loud.
besides, as far as i`m concerned, anybody who drives around on the street with a loud exhaust, deserves a noise citation from every cop they run across...
as for removing the mufflers, why bother.... theres generally little, if any real power gains.
and your car will be obnoxiuosly loud.
besides, as far as i`m concerned, anybody who drives around on the street with a loud exhaust, deserves a noise citation from every cop they run across...
Pro
Joined: Aug 2006
Posts: 682
Likes: 1
From: SpringHill florida
LEO's dont care so far
I'm in Florida, so no worries about smog testing... although I AM wondering if the LEO's will start paying more attention to me around town... anyone ever get nabbed for breaking sound ordinances or the like after removing your mufflers?
Thanks for the tip about making sure the tail end of the exhaust sticks out the rear, I'll make sure they do that....
Thanks for the advice...
Thanks for the tip about making sure the tail end of the exhaust sticks out the rear, I'll make sure they do that....
Thanks for the advice...
Pro
Joined: Aug 2006
Posts: 682
Likes: 1
From: SpringHill florida
honestly
I guess I'm gonna pull the trigger... I just want some extra noise, and the performance thing looks like I'm not gaining or losing anything.
If it proves to be too loud, i can always slap on some flowmaster junk, or get a nice Magnaflow system.
Hopefully tomorrow I'll have a little more growl in the rear
If it proves to be too loud, i can always slap on some flowmaster junk, or get a nice Magnaflow system.
Hopefully tomorrow I'll have a little more growl in the rear
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Yeah and becomes illegal. Leave the cats alone, you may think it's faster, but I'm willing to bet it isn't, especially on a stock LT1.
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
All you guys in "No Test" states, gotta watch it. Won't be long before they require national emissions testing. Better to be prepared and legal than to try and think youdid something good for your car. On a stock engine, removing the cats doesn't do any benefit for performance. Especially on the LT1(I feel like I'm repeating myself). For those of us in the "Test" states, there can be a visual inspection as well. The government mandates where the cats are to be located and that location can not be changed legally(although I'm sure if a company got a CARB EO maybe then you can).
Burning Brakes
Joined: Dec 2006
Posts: 782
Likes: 0
From: Ga
not to sound mean (honestly) but what else is done to your car to make it too loud? and what is your def. of too loud. a corvette should not be as quiet as a honda, it should sound powerful. and im not talkin annoying loud. i have the muff. eliminators and even my mom says its not too loud. my dad (screamindman-also a forum member) has a 99 c5 with borla stinger exhaust, no other mods and he is way louder than me. just my opinion
just my opinion
Racer
Joined: Dec 2006
Posts: 325
Likes: 2
From: Chattanooga TN
You know what they say...
If it's TOO LOUD...
You're TOO OLD...
just kidding...to each his/her own, I guess.
I prefer loud and my muffler eliminators are just right IMO...although they "may" be a little too loud this Spring with longtubes and a point and a half more compression...lol.
http://www.youtube.com/watch?v=WM3XgbbdhZQ
If it's TOO LOUD...
You're TOO OLD...
just kidding...to each his/her own, I guess.
I prefer loud and my muffler eliminators are just right IMO...although they "may" be a little too loud this Spring with longtubes and a point and a half more compression...lol.
http://www.youtube.com/watch?v=WM3XgbbdhZQ
but i`ve had this attitude since i was a teenager.it all started when i was riding in a freind`s (loud) car, and we were doing some street racing. all of the sudden, a cop jumps in behind us from a side road, and catches us in the act of making another run.
the officer informed us that he was about two blocks away, and would have never known that we were racing, had he not been able to hear my buddies car , and track us down from it...
several months later, i was racing a rather unassuming looking dark blue 78 Malibu, with my "arrest-me" red Trans Am. my car was rather quiet, compared to his. an officer witnesses both of us racing, and begins following us. before he hits the lights, we turned off in opposite directions, as the road we were on dead ended. and the officer decides to pull over my friend in the Malibu. when asked by my friend why he got pulled him over instead of me, the officer told him it was because he could write him up for both racing, and for excessive noise....
which he did...
plus, i`ve always been more of a fan of "sleeper" cars, that dont try to advertise their performance potential with lots of noise, rough idles, lots of visible modifications, ect.
Racer
Joined: Dec 2006
Posts: 325
Likes: 2
From: Chattanooga TN
