Exhaust--Whats the difference?????

**LETHALxLS1** · 11-20-2006, 01:35 PM

I recently bought a 98 z-28 camaro. I want to upgrade the exhaust and have a couple of questions.The 3 inch Flowmaster exhaust is about $300 bucks while the 3 inch Borla exhaust is $830 bucks. What is the major difference between the two as far as increased horsepower and sound?? Also the slp loudmouth was another exhaust I was looking at but I dont want my car to be super loud when I get on the throttle. Any advice on this matter would be great. Thanks for all your help.
deadbydawn421-----------

**A~NICE~CAR~IS~A~NICE~CAR** · 11-20-2006, 02:44 PM

www.ls1sounds.com

IMO you get what you pay for.
Flow Master may be cheap but its the worst for the LS1 engine as far as HP.

**01camaross** · 11-20-2006, 02:44 PM

The flowmaster isn't going to give very much more power but will sound decent the slp loudmouth will be very loud,
borla, magnaflow, hooker, gmmg, are all really good systems and flow and sound really good. i have gmmg and love the way it sounds but it's more of a personal choice.

**Y2KPewterSS** · 11-20-2006, 02:47 PM

All 3 that you mentioned sound great. The Loudmouth isn't ridiculously loud unless you get rid of the cats and add long tubes, then it gets real loud. The Flowmaster doesn't flow very well, I have seen some instances where the stock catback flowed better than a Flowmaster. The Borla is pricey, but offers and adjustment system so you can remove plates and control the sound of it.

Flow= Loudmouth>Borla>Flowmaster

Loudness=Loudmouth>Borla>Flowmaster

Price=Loudmouth>Flowmaster>Borla

Sound=Borla>Loudmouth>Flowmaster

The Borla and Loudmouth are both stainless IIRC and will hold up longer than the Flowmaster as well.

If you got the money, I would go with the Borla, its as good as any out there for all variables. If you are on a budget, I would go with the Loudmouth as long as you are planning to keep your cats for a while. I would personally keep the stock exhaust versus a Flowmaster catback though. Hope this helps some.

**ss~zoso~ss** · 11-20-2006, 03:44 PM

if you do get a flowmaster get a 40 series DO NOT GET a 80 series, 40 series flows soooo much better

**'96 Z28SS** · 11-20-2006, 09:00 PM

1 word.........CORSA!

ignore the price tho YIKES!

**Tyler_LS1** · 11-20-2006, 10:08 PM

A great flowing exhaust with great sound and around $450 is Magnaflow.

if youve got the money then go with corsa, borla or GMMG

The GMMG cat back is also VERY Good but its $700.

**Frankthetank** · 11-21-2006, 03:20 AM

What is the quietest? But flows good? Lol i got the texas rumbler exhaust and i wanna quiet mine down lol....no cats, long tubes and a cam will do it lol

**01camaross** · 11-21-2006, 06:51 AM

Originally Posted by Frankthetank

What is the quietest? But flows good? Lol i got the texas rumbler exhaust and i wanna quiet mine down lol....no cats, long tubes and a cam will do it lol

The slp dual dual is prolly one of the best flowing quietest cat backs out there, and the hooker isnt to loud and has great flowing also.

**Frankthetank** · 11-21-2006, 07:20 AM

lol......aint the only dual dual slp exhaust is the loud mouth right?

**01camaross** · 11-21-2006, 03:38 PM

Originally Posted by Frankthetank

lol......aint the only dual dual slp exhaust is the loud mouth right?

Well they used to make a dual dual cat back system because i used to have one , but i'm not sure if they still offer it, the loud mouth has a dual dual exhaust tip available.

**joezee** · 11-22-2006, 05:28 PM

c..o..r..s..a.. very smooth quiet rumble at idle, no interior noise,...half throttle does not cackle like other cat backs; just loud enough ....full throtle is awesome from outside....anyway,other f-body owners are always asking me what cat back i've got...

my car went from 13.3s @ 107 to 13.1s @ 109 after cat back !!!

**Y2KPewterSS** · 11-22-2006, 06:46 PM

Moved to external mods forum for better response.

**Wesman** · 11-22-2006, 06:56 PM

Originally Posted by ss~zoso~ss

if you do get a flowmaster get a 40 series DO NOT GET a 80 series, 40 series flows soooo much better

I have an 80 series Flowmaster on my car that was on there when I got it - are they really that restrictive?? I knew they were quieter than the 40, but I didn't know that they really hindered exhaust flow that much.

**Mr. Luos** · 11-22-2006, 07:25 PM

Magnaflow.

Great flow, calm at idle and lower RPM's, mean when you step on it.
Not extremely pricey.

**biga0206** · 11-22-2006, 08:32 PM

whats the power difference from magnaflow and Loud Mouth?

also is there a difference between Loud Mouth & Loud Mouth II?

**Tyler_LS1** · 11-22-2006, 08:35 PM

Originally Posted by Wesman

I have an 80 series Flowmaster on my car that was on there when I got it - are they really that restrictive?? I knew they were quieter than the 40, but I didn't know that they really hindered exhaust flow that much.

**Tyler_LS1** · 11-22-2006, 08:39 PM

Originally Posted by biga0206

whats the power difference from magnaflow and Loud Mouth?

also is there a difference between Loud Mouth & Loud Mouth II?

The LM is Louder than the LM2.

**Tyler_LS1** · 11-22-2006, 08:40 PM

Originally Posted by Mr. Luos

Magnaflow.

Great flow, calm at idle and lower RPM's, mean when you step on it.
Not extremely pricey.

Thats the Cat-back I will be getting soon!!

**INMY01TA** · 11-23-2006, 08:18 AM

If price is an issue and you don't want it too loud I'd go with a Maginiflow. Stainless construction and flows great. You can add headers later on down the road and it won't be too obnoxious. The Flowmaster is junk. I had it, I know. Doesn't flow well, sounds weak imo, and mine rusted and blew a hole in one of the welds. I have the Borla adjustible catback now and it is nice. Stainless construction and it's adjustible so it goes from quiet as stock to turning heads. Worth it if you wanna spend the money. I like the way the Loudmouth sounds if you keep the stock manifolds and cats, with headers and an ory, too loud and raspy.