I'm a newbie to LS1s and ls1tech.com, and I used the search feature a lot. I tend to find it doesn't usually answer my questions, so this might help for people who are looking for exhausts. Lets make this a big tread, and everyone add their opinions of the following exhausts... this will be a great addition to the search/archives.

Please share your comments on the exhausts below. Fit/finish/sound/price. Are you happy with it? Please tell us as much as possible. Thanks!!

Here are pics of the exhausts from ls1speed.com:

http://www.ls1speed.com/old_site/Onl...0exhaust_2.htm

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APPLIED TECHNOLOGIES EXHAUST

3" mandrel bent 304 stainless construction, excellent fit, cars have gone 9's with this un-restrictive muffler. 3" stainless slash cut tips.

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RANDOM TECHNOLOGY EXHAUST

Mandrel bent 3" construction, non-restrictive, stainless or aluminized. 14 dyno tested hp. Excellent fit, 3" slash cut tips.

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SLP PERFORMANCE "LOUDMOUTH" EXHAUST SYSTEM

This new exhaust system can offer up to a 25 hp gain and is a direct replacement for the stock exhaust system. Manufactured from stainless steel with your choice of either a 304-stainless-steel, 3.5" slash cut or dual/dual tips.

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MUFFLEX PERFORMANCE EXHAUST

For the ultimate "big block" sound. These systems are available in either big 3.5" or enormous 4" aluminized tubing. These systems utilize Flowmaster race or Spintech race mufflers. Dual tailpipes are 3", that include chrome, rounded oval tips.

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CORSA PERFORMANCE EXHAUST

CORSA's Power-Pulse RSC™ systems are handcrafted out of 100% aircraft quality stainless steel and have no power-restricting chambers, baffles or packing to wear out.

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WHISPER MOTORSPORTS EXHAUST

3" mandrel bent 304 stainless construction, highly polished stainless muffler, 3" slash cut tail pipes, pre-welded to the muffler for an easy install. Mellow sound at idle, aggressive sound at WOT.

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MAC EXHAUST

Dual 2 1/2" pipes with 3.5" chrome tips-fully HTS coated, affordable exhaust system, with excellent performance. Includes all installation hardware

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SLP PERFORMANCE EXHAUST SYSTEM "dual-dual"

Built to OEM standards, stainless construction, designed to increase HP by as much as 20. Choose from quad outlet, or same side exit.

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FLOWMASTER EXHAUST

3" dual outlet with chrome tips, legendary Flowmaster sound. Gains of up to 10hp can be expected.

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BORLA EXHAUST

Quad outlet, stainless system, fully adjustable sound and performance. Chrome tips. Includes stainless band clamps.

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Thanks guys!!

<small>[ July 24, 2002, 03:31 PM: Message edited by: bo0oost ]</small>

 

I like SLP 2OTL. Sounds great with an ORY (no rasp). Nice quality. I don’t see how any rear exit catback using a muffler could possibly flow any better. Straight thru design.

Reasonable price for the fact it’s all stainless steel.

I would like to learn more about the Bassani catback though. I have their headers and I like them very much.

But my vote for favorite (at this time) goes to SLP 2OTL.

 

Also, I have had Magnaflow and Flowmaster.

Flowmaster American Thunder: Very nice sound with cats. Kinda raspy with an ORY in the 2100 to 2400rpm range. Not stainless steel, but still nice quality (tips are polished T304 stainless steel though). Poor flow compared to straight through designs though.

Magnaflow: Great quality, good flow. Too quiet for me with cats. Never tried it with an ORY though. Tips are OK but I don’t care too much for them as I like angle cut better.

 

Dont forget GMMG. cant really explain it, uhh deap kinda tuff sounding, I LOVE IT, i need some headers though <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />

Drew

 

Spintech also makes a catback for the F-body now. I'm using their 3" in / dual 3" out muffler on my setup. I like it alot. Previous exhausts were SLP dual-dual and SLP loudmouth.

 

Can anybody give me any more info on the Spintech mufflers? I'm having a custom exhaust done and the guy wants to use a Spintech. Definately NOT a straight-through design, so I'm concerned about the flow of these mufflers.

The guy that's doing the exhaust races a 9 sec car, so he knows his stuff. But I'd really like to hear from someone here that knows these mufflers. Thanks.

 

I been around for a while and i can tell you this about it friend GMMG sound's better than my Borla. now diff is that im not saying you wont get any HP from GMMG but it does nothing for the car and i know somebody that has FLP's and GMMG on there car and it rock's. if i was you

go Borla i have it and i was going with the GMMG till i talked to a few Tech's for about 4 month's before i bouight any and here's what thay sed GMMG sound's good but does nothing for the car Corsa's ok.... Borla and FLP's you can't go wrong friend you will be glade you did
GMMG Borla and if you do try the bigest plate in there and work your way down. rember*the more you use a little plate the less air flow mean's more you will get off the linelow end. the more you leave your Borla open with the biggest plate the more you going to get top end and maby a hair off the line. i run the bigest plate in there

with GMMG it's 1 sound and 1 sound only that's the good thing about Borla you can alway's adjust it any time you feel like it you go to the track and you want better ET's hell stick the little plate in there you want louder in the city open that hole up hope this help's
im happy with it...............

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Blue Fire:
<strong>I been around for a while and i can tell you this about it friend GMMG sound's better than my Borla. now diff is that im not saying you wont get any HP from GMMG but it does nothing for the car and i know somebody that has FLP's and GMMG on there car and it rock's. if i was you

go Borla i have it and i was going with the GMMG till i talked to a few Tech's for about 4 month's before i bouight any and here's what thay sed GMMG sound's good but does nothing for the car Corsa's ok.... Borla and FLP's you can't go wrong friend you will be glade you did
GMMG Borla and if you do try the bigest plate in there and work your way down. rember*the more you use a little plate the less air flow mean's more you will get off the linelow end. the more you leave your Borla open with the biggest plate the more you going to get top end and maby a hair off the line. i run the bigest plate in there

with GMMG it's 1 sound and 1 sound only that's the good thing about Borla you can alway's adjust it any time you feel like it you go to the track and you want better ET's hell stick the little plate in there you want louder in the city open that hole up hope this help's
im happy with it...............</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Who makes GMMG? What is that?

I'm kinda trying to decide between the Mufflex 3.5 or 4" catback, or the Corsa. So hard to decide!! Does anyone have one of these? How's sound? How's flow? How's HP?

Thanks!

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ONYXSS:
<strong>Can anybody give me any more info on the Spintech mufflers? I'm having a custom exhaust done and the guy wants to use a Spintech. Definately NOT a straight-through design, so I'm concerned about the flow of these mufflers.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Spintech is what they use on Mufflex 4" systems. If it's not straight through, I wonder how much better it flows than a 3" straighthrough corsa type system... hrm

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by bo0oost:
Who makes GMMG? What is that?

I'm kinda trying to decide between the Mufflex 3.5 or 4" catback, or the Corsa. So hard to decide!! Does anyone have one of these? How's sound? How's flow? How's HP?

Thanks![/QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Also, how loud is the mufflex? Anyone heard this? Is it raspy when you let off? Does it drone?

 

Catbacks are for pansies <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

real exhaust

 

BORLA! Awesome sound and tunable!

- Million mile warranty in writing!
- Solid Stainless Steel
- No coatings to scrape off
- Super Sharp fully-polished intercooled
tips
- Ultra-quality construction

Message to TrahnZam WS6 - Dude, you have one of the sharpest looking T/As i've ever seen posted anywhere. I've seen you post it before and I love that color and those Fikse wheels. I bet that dual-exaust flows awesome. The only thing I would say to you is with that "gunmetal" color car and those wheels - I think some kind of chrome or polished tips out the back would look way cooler than empty spaces. Something just does'nt look right when those exaust spaces are empty. Just my opinion - not criticism. Love your car Dude! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TrahnZam WS6:
<strong>Catbacks are for pansies <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

real exhaust</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hell yea!!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />

 

I've got the Flowmaster cat-back with a 3" Y-Pipe, and I absolutely LOVE the deep rumble of this setup!!! It is one of the cheaper cat-backs on the market. For the price I don't think it can be beat IMO. With this exhaust, an air lid w/k&n, and a few free mods, I'm up to 370hp at the flywheel!!! I would have to say the the hp gains are there. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> <img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" />
P.S.... still running factory manifolds w/cats!

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">originally posted by simpsonsruleWS6:
<strong>Message to TrahnZam WS6 - Dude, you have one of the sharpest looking T/As i've ever seen posted anywhere. I've seen you post it before and I love that color and those Fikse wheels. I bet that dual-exaust flows awesome. The only thing I would say to you is with that "gunmetal" color car and those wheels - I think some kind of chrome or polished tips out the back would look way cooler than empty spaces. Something just does'nt look right when those exaust spaces are empty. Just my opinion - not criticism. Love your car Dude! </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">build a faster car and you will never have to see the back of his <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> j/k. i vote for the !catback as well. im also running headers(dynatechs)and twice pipes with an x(dr.gas)

 

My 4" Mufflex with Spintech is very loud and definitely raspy with no cats and MAC's. I mean window rattlin LOUD!!!!!

I wouldnt recommend it if you have picky neighbors. With a VIG3200 I have to give it just enuff gas to get to the rasp.

Flows excellent tho. I think I am gonna sell it tho....I am gettin too old for it and I live in a nice hood now.

Later, Stu

 

I can only comment on what I have had/heard in person:

Borla - decent exhaust, most people like the plate feature (but pointless if you also have a cutout). Can rasp like hell with an OR y-pipe.

Corsa - probably the best looking one. Sounds OK (but not out of world) with stock engine and cats. Really, really shines with OR Y-pipe and/or cammed/extra cube motor. Why I have one <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Though not on the list - Hooker catback. Sounds good with stock motor. Fairly decent flowing. Not the world's greatest quality.

SLP loudmouth - good with stock engine and cats. Would not recommend it for OR y-pipe or larger cubed motor. Is ticket loud, and you might as well run a cutout.

SLP dual-dual: many swear by it, though I have no direct experience with it. Have thought that other SLP stuff was of cruddy quality.

 

"Borla-fully adjustable sound". Enough said.

 

A buddy and I made sound ajusting plates for his exhaust cut-out. Running a stock Y with cats. Drill holes in the caps. 3/4", 1 1/4. Anything over 2 does't seem to matter. <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

 

What about GMMG?