High Performance Exhaust

[Hesh]

All of them are listed in the GM performance catalog someone linked in a post in this section. Its on page 324 i think...no prices just the parts and the part numbers.

[TAG UR IT]

not all exhausts were tested...nothing from SLP.

out of curiosity, who here has heard the SLP loudmouth?

[radz28]

Loudmouth (LM) on a Camaro/Firebird? If so, I have and its pretty cool, unless you hate rasp and drone... LOL! With LTs and no cats', you're asking to go deaf. The rasp is really bad. If you get the LM II it's a lot better. I like what they just changed on their F-body design. GMHTP just tested their new LTs for 4th Gens. and the LM and got good numbers, although I don't recall them. I don't think a person would get much more power over your DD as long as that restrictor was cut out of it for max' flow.

I'm sorry if I ranted for nothing if that's not what you meant, LOL!

[CamaroSpike23]

Originally Posted by TAG UR IT

not all exhausts were tested...nothing from SLP.

out of curiosity, who here has heard the SLP loudmouth?

[Thwick]

Does anyone know who is making the GMPP exhausts? Just asking because the Cobalt cat-backs from GMPP are actually made by Borla. (and sound great)

[pharmd]

Originally Posted by CamaroSpike23

but that list doesnt really do much when those exhausts are tested on a mustang.

flow is flow, more hp would only exacerbate the hp difference with a poor flowing muffler...btw, the new SS will have a true dual set up very similar to the mustang used in this test.

[TAG UR IT]

Originally Posted by CamaroSpike23

Notice a trend?

[Yeahyouknwit]

i have a question. i have only had one aftermarket exhaust system and that was flowmaster cat back. im confused after reading on here about the exhaust systems. so if you change your exhaust system does that also change your cats or should you change them as well? sorry if this is a dumb question

[Mr Twisty]

Originally Posted by Little Weasel

I will have a chambered exhaust available through Tom Henry Racing.

Who is this "Tom Henry" fella anyways??? (I know I know) I hope you'll be sharing more info when that time comes.

Put a stick under tags gas pedal, see how long it takes for him to find it.

[JMAN311]

Originally Posted by Yeahyouknwit

i have a question. i have only had one aftermarket exhaust system and that was flowmaster cat back. im confused after reading on here about the exhaust systems. so if you change your exhaust system does that also change your cats or should you change them as well? sorry if this is a dumb question

If you buy a cat-back system it bolts up behind the cats and are a pipe/muffler/tip combo. My previous Camaro/Corvette had an H pipe from the factory between the manifolds and the mufflers. This is the part of the system that has the cats installed into it. If you were going to get a full system it would include equal length headers (to replace the usually crappy flowing cast iron manifolds that come stock) and an X pipe to replace the stock H pipe which will also help for a more direct flow. These can either come as offroad (no cats) or with high flow cats if you have to deal with emissions standards in your state.

There were 2 cats on my camaro and vette. I've heard of older Mustangs having as many as 6 or 7 cats, lol. I got an X pipe with no cats (saved about 400 bucks and there are no emissions laws where I live anyway) on both my cars so I had to get "dummy" O2 sensors installed on my Camaro and the Vette we just reprogrammed the computer to keep it from triggering error codes about the O2 levels.

If you are just wanting a different sound then go with the cat-back/GMPP exhaust upgrade kit since the sounds all about the mufflers. If you are wanting more power then that's where the headers and a full 3" system w/ X pipe would come into play. As stated in other treads you will prob see 20-30 more HP to the wheels with just headers. I saw ~22hp to the wheels after adding headers on my LS1 vette. Trust me if you do a full system you will be able to feel the difference in performance the next time you drive your car. Hope this helps

[blackZbandit]

Originally Posted by Yeahyouknwit

i have a question. i have only had one aftermarket exhaust system and that was flowmaster cat back. im confused after reading on here about the exhaust systems. so if you change your exhaust system does that also change your cats or should you change them as well? sorry if this is a dumb question

Not if you get a cat back system because they only change what comes after the catalytic converter(s), hence the name "cat back" (from the cats...back). But if you really want to get the most out of your (legal) after market exhaust setup you may want to add some high flow cats or get a complete sytem that already has them.

[Yeahyouknwit]

Thanks guys. all i have on my stang is aftermarket catback. cant wait till i get rid of this pos for my camaro!

[10redrocket]

To hear different systems on the LS3, go to youtube and type in
LS3 exhaust.
There are vet and G8 clips with sound.

[CamaroSpike23]

Originally Posted by pharmd

flow is flow, more hp would only exacerbate the hp difference with a poor flowing muffler...btw, the new SS will have a true dual set up very similar to the mustang used in this test.

btw... the SS will have a 6.2L set up very different than the 4.6L used in that test.

flow is flow, sound is sound, but when you are comparing two different motors to figure out what is best, it doesnt work.

same thing as the flowmaster exhaust. they sound great on mustangs, but sound like ass on 3rd and 4th gen f-body's. Magnaflow sounds great on both.

Originally Posted by TAG UR IT

Notice a trend?

what trend would that be?

Originally Posted by Yeahyouknwit

i have a question. i have only had one aftermarket exhaust system and that was flowmaster cat back. im confused after reading on here about the exhaust systems. so if you change your exhaust system does that also change your cats or should you change them as well? sorry if this is a dumb question

if you just change the cat-back system then all you are changing is the tubing from the catalytic converters back. if you are swapping your exhaust manifolds to headers that is something different as well.