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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 10-31-2013, 09:19 AM   #1
StanTheMan
 
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What exactly is muffler delete? Advantages and disadvantages?

Hi guys,

Can somebody please clarify this for me? What exactly does this "muffler delete" mode entail? I know it makes the car sound louder but apart from that, what other advantages/disadvantages does it bring?
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Old 10-31-2013, 09:26 AM   #2
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You also lose about 40 ugly pounds from the rear end of the car.
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Old 10-31-2013, 09:27 AM   #3
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louder and less weight, is about it. might gain a half horsepower. lol
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Old 10-31-2013, 09:27 AM   #4
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A disadvantage would be an unsolicited contact from a LEO.
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Old 10-31-2013, 09:29 AM   #5
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A muffler delete is simply a straight pipe (some have new exhaust tips) that is put in place of the muffler after its been cut and dropped out.

Pro's- Better sound, weight reduction, better gas mileage, better high speed / RPM output

Con's- Low end torque is reduced slightly, but you'll make it up (and more) at the top of the power band.



If youre thinking about it....do it. It's one of the cheapest, easiest and coolest mods you can do. Also, on a stock SS it's not so loud that it'll piss off the neighbors.
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Old 10-31-2013, 09:31 AM   #6
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Quote:
Originally Posted by StanTheMan View Post
Hi guys,

Can somebody please clarify this for me? What exactly does this "muffler delete" mode entail? I know it makes the car sound louder but apart from that, what other advantages/disadvantages does it bring?

one of the best and cheapest mods you can do!
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Old 10-31-2013, 09:36 AM   #7
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Please explain how deleting mufflers changes low end torque? Most of the exhaust restriction are from the cats.

Sent from the road.
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Old 10-31-2013, 09:38 AM   #8
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Not a true straight pipe... You still have cats and resonators, so it isn't as loud as you might think.

It does sound as good or better than most axle back after-market.

All in all, the only advantage is it sounds better... and disadvantage is deceleration popping (if you don't like that... I for one count that as another advantage...)
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Old 10-31-2013, 09:42 AM   #9
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A disadvantage would be an unsolicited contact from a LEO.
It's not nearly loud enough for that.
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Old 10-31-2013, 09:43 AM   #10
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Not a true straight pipe... You still have cats and resonators, so it isn't as loud as you might think.

It does sound as good or better than most axle back after-market.

All in all, the only advantage is it sounds better... and disadvantage is deceleration popping (if you don't like that... I for one count that as another advantage...)
All this. Best $50 I ever spent in life.
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Old 10-31-2013, 09:47 AM   #11
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It's not nearly loud enough for that.
Throw some long tube headers on and that problem is solved
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Old 10-31-2013, 09:49 AM   #12
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Please explain how deleting mufflers changes low end torque? Most of the exhaust restriction are from the cats.

Sent from the road.
Most, isnt all. Restriction is a variable statement. A 3 inch straight pipe might present lots of flow for a 4 cylinder ricer. But a 3 inch straight pipe might be restrictive to a big block Chevy with a 600 c.i. blower on top. With that being said, anything that collects heat, creates exhaust turbulence, etc in the exhaust system...creates restriction. The muffler does create restriction, even if not most of it.

Engine breathing is a static target of balance between backpressure and flow. That is...until hardware is added or deleted, then the scale moves. At the low of end of the powerband, backpressure is a little more beneficial for a quick take off.

With a delete, the normal back pressure builds a little further in the RPM band because there is less restriction.

P.S. It's exactly why some Corvettes have a dual mode exhaust. At more than 25% throttle and higher than 3500 RPM's the exhaust bypass mode opens...allowing for the Corvette to have the best of both worlds.

Last edited by SabotAndHeat; 10-31-2013 at 10:09 AM.
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Old 10-31-2013, 09:50 AM   #13
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Some folks have said muffler delete is too loud for their taste. Just a heads up. I cut mine off and put on axle back from Solo with J pipes. Love the sound. No matter what you do it will sound better than stock!
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Old 10-31-2013, 09:53 AM   #14
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Originally Posted by SabotAndHeat View Post

Con's- Low end torque is reduced slightly, but you'll make it up (and more) at the top of the power band.
Where did you hear this?

Better flow = more torque
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Old 10-31-2013, 09:54 AM   #15
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I can't wait till long tube headers and 3" back

Sent from the road.
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Old 10-31-2013, 10:22 AM   #16
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I'm assuming that such mod will most definitely void the warranty huh?
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Old 10-31-2013, 10:30 AM   #17
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Best money I ever spent. Mine is an LS3 so I don't get a lot of drone, but with the L99 (or whatever the auto version is) you may experience some. I for one think it is much better than spending close to a grand for the GM NPP system. (although I'm sure the delete is not nearly as classy and refined.)
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Old 10-31-2013, 10:31 AM   #18
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P.S. It's exactly why some Corvettes have a dual mode exhaust. At more than 25% throttle and higher than 3500 RPM's the exhaust bypass mode opens...allowing for the Corvette to have the best of both worlds.
I've heard some Camaros have this as well, lol.
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Old 10-31-2013, 10:39 AM   #19
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I'm assuming that such mod will most definitely void the warranty huh?
I don't believe so. Even a header install with high flow cats and cat back exhaust doesn't effect the power train warranty unless you through in a tune.....just my understanding however.
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Old 10-31-2013, 10:42 AM   #20
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Muffler delete is the only mod I have so far. Not loud at all, acutally kinda quiet. No change in performance, I did start averaging .1mpg better fuel economy...
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Old 10-31-2013, 10:46 AM   #21
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I've heard some Camaros have this as well, lol.
ZL1? Sweet, didnt know.

Does it open at take off and close at high speed?

-or-

Does it stay closed at take off and open at high speed? (my vote)



Apparently, Chevrolet gets it.
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Old 10-31-2013, 11:52 AM   #22
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Muffler delete from magnaflow with solo hi flow...no drone. http://youtu.be/U6MB4yUwVKA
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Old 10-31-2013, 12:05 PM   #23
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It's an Inexpensive way to achieve a nice V8 rumble and lose the factory muffler weight.
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Old 10-31-2013, 12:20 PM   #24
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It's not nearly loud enough for that.
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Old 10-31-2013, 12:36 PM   #25
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Dumb question dept: Does the muffler delete have any effect at the DEQ for smog check when renewing license plates?
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