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?

You also lose about 40 ugly pounds from the rear end of the car.

louder and less weight, is about it. might gain a half horsepower. lol

A disadvantage would be an unsolicited contact from a LEO.

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.

one of the best and cheapest mods you can do!

Please explain how deleting mufflers changes low end torque? Most of the exhaust restriction are from the cats.

Sent from the road.

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...)

It's not nearly loud enough for that.

All this. Best $50 I ever spent in life.

Throw some long tube headers on and that problem is solved :D

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.

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!

Where did you hear this?

Better flow = more torque

I can't wait till long tube headers and 3" back :)

Sent from the road.

I'm assuming that such mod will most definitely void the warranty huh?

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.)

I've heard some Camaros have this as well, lol.

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.

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...

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.

Muffler delete from magnaflow with solo hi flow...no drone. http://youtu.be/U6MB4yUwVKA

It's an Inexpensive way to achieve a nice V8 rumble and lose the factory muffler weight.

:word:

Dumb question dept: Does the muffler delete have any effect at the DEQ for smog check when renewing license plates?

Works like the vette. Not sure of actual throttle % and rpm, though. Most of us pulled the fuse to it so it stays open all the time, though. Or you can buy a Mild to Wild switch w/remote so you can control it yourself, or program it to a home link switch.
BTW, NPP exhaust is an option on SS and some, if not all V6 models.

Gee... the video was just getting to the good part, then it ended.
:)

This is what I'm leaning towards. I hear the J pipes practically eliminate drone.

I love the sound and look of the muffler delete on my 2010 SS. People ask what exhaust package I'm running when they hear it. Sounds great, IMO. One of the best and cheapest mods you can do to improve the exhaust tone. Two words: DO IT

Yup, check out my video!

http://youtu.be/MkhoFw4y0nQ

Only person I ever had tell me that they didn't like my straight pipe was a friend of mine with an ls3 camaro that paid over 1K for a big name catback and they sounded nearly the same ...


I have since added longtube headers with no cats, still sounds perfectly great to me :)

But OP is from "EU" which I assume stands for European Union.
Cars in Europe have different equipment requirements.

I did the muffler delete and I got so sick of the drone! It was bad from 1900 to 2200 rpm's. At first I thought I would get used to it because the sound was so much better over stock but after some time I just didn't like it. So I went full headers and cb system and now I'm a happy camper.

Ya sorry my neighbour came out her door with her new born baby.

bumping this thread so i dont make a new one, just had a quick question

if i go to a muffler shop and want to do a muffler delete i dont have to buy any parts do i?

Not unless you get new tips.

This was my second mod had tint first. To me it was a great improvement over the stock sound without being too loud. It makes a nice rumble and I get a little bit of decel pop which I actually like. I went with Doug thorley muffler delete pipes. FYI, if you go this route take the pipes in and get the ends flared out so they can actually fit over the stock exhaust because the way they come they will never fit. Also, on the l99 you will diffently want to tune out AFM or get a Range AFM delete device as it sounds horrible when it kicks in and muffler delete makes it sound worse.

NOT TOO LOUD ,if you have the stock factory cats and exhaust manifolds ,best way to get better sound cheap and loose 40 pounds. And if you believe Chevrolet's claim on the NPP duel mode 4 to 6 hp more.

What parts to you need to buy and where can you buy them for a diy project?

Welding machine, welder,2.5" pipe , know how to bend pipe and something to cut off the tips. I paid $100 for mine at a local muffler shop