Advice on exaust

[mach83]

Hey everyone. Just wondering if anyone could give me any advice on putting a exaust on my WS6. I love the car now but am looking to add a little more HP to it. Around 350hp would be perfect. I don't want to get ivolved with mods and stuff though. I guess my question is what are some basic things i can do to bump the 320 to 350. I know Corsa and Borla exaust systems are nice. Anyone have any advice on these things? Does putting a true dual exaust on it even make more HP? thanks for your help.

[LiquidFire350]

are you looking to get 350 out of exhaust alone, because i dont know if thats possible. theres a couple other things to look at too, like if you going to lower your car you may not want to go the true dual route, it eats up a lot of ground clearance
do you want to stay emissions complaint or do you want to say screw you environment?
are you willing to scarifice sound for all out power?

but either way, LT headers will make more power than shorties, shorties are more emissions friendly, high-flow cats can be added to LTs, but i dont think they work as well as the stockers

true duals will make more power under the curve, although a properly setup Y-pipe can make the same power(or even more) as true duals

now this is completely opinionated, but true duals sound better than a y-pipe setup, i think LTs ORY and a LM make a little bit less power than TDs but offer more ground clearance, but going that route is raspy as hell and sounds like garbage

[baddogz28]

Here's what I would do:

Magnaflow cat-back
Airlid of some kind (Whisper, Texas Speed, MTI, SLP, etc.)
Off-road y-pipe
Pacesetter headers

BTW: You say you don't want to get involved in 'mods.' You have no choice, 30 hp isn't somthing you can pick up without modifying the car in some ways. I don't know what type of budget you are working with, but I would think that you'd be under $1000 easy with the parts I suggested. Another thing to do is to try and buy used parts. Usually they work as well as new ones and you save a boatload of cash.

[CamTom12]

Agreed with Baddog...

[mach83]

Thanks for the help guys. I was just toying with putting some things in my car to boost up the HP a little. I guess i was just wondering what kind of sound i could get out of a new exaust system and if it would show any difference in power. Thanks again.

[LiquidFire350]

www.ls1sounds.com

has sound clips of pretty much every kind of exhaust

[Chris 96 WS6]

"just" an exhaust system won't net more than 8-12 new HP, probably not a difference you're going to feel. You're not going to be able to reach 350rwhp w/o modifications.

But 350 crank hp? You're basically there already. GM under-rated the LS1 by a wide margin.

[LS13RDGEN]

As an example:
Morriss (1999 SS) has LS6 intake, ported TB, SLP MAF, Bellows, Lid, Free Raim Air mod, Pacesetter Long Tubes, Y-Pipe, Flowmaster 3" Catback and a little bit of tuning and she put down 331 RWHP. That is also on a 120,000 mile engine.
An underdrive pulley and a cutout would have probably gotten me closer to 350.
True duals are next on my list of things to install on her car since the muffler gave out. :lol

[gettinthere]

Here's what I would do:

Magnaflow cat-back
Airlid of some kind (Whisper, Texas Speed, MTI, SLP, etc.)
Off-road y-pipe
Pacesetter headers

BTW: You say you don't want to get involved in 'mods.' You have no choice, 30 hp isn't somthing you can pick up without modifying the car in some ways. I don't know what type of budget you are working with, but I would think that you'd be under $1000 easy with the parts I suggested. Another thing to do is to try and buy used parts. Usually they work as well as new ones and you save a boatload of cash.

:werd:

That's good cheap HP.l

[Moparnos (The SLP Guy)]

your going to have to do the basic bolt-ons. a cat back will not get you there.

[2001SSDE]

Why spend money on a true duel or exhaust system, put on a cutout. A cut out will run about 40.00 and will net you the same horsepower that a 800 dollar exhaust will. You can put underdrive pullies for another 200 and net another 15-20 horsepower. Just the pullies and cut out will get you an additional 35-40 horsepower, add an airlid and your right at 50 horsepower. Dependant upon stock output, your at 350-360 rear horsepower and have spend 300-350 dollars.

[CamTom12]

Some folks like the sounds of the cat-backs, instead of the on-wide open / off-stock sound of the cut-out

And I think your HP figures are a little high :)

[NBM2001z28]

Why spend money on a true duel or exhaust system, put on a cutout. A cut out will run about 40.00 and will net you the same horsepower that a 800 dollar exhaust will. You can put underdrive pullies for another 200 and net another 15-20 horsepower. Just the pullies and cut out will get you an additional 35-40 horsepower, add an airlid and your right at 50 horsepower. Dependant upon stock output, your at 350-360 rear horsepower and have spend 300-350 dollars.
Where do you get these pulleys from? that cutout better come with a 30 shot too:thumbsup:

Liquidfires car just dynoed 305 with headers/duals. 350 is going to come with a handful of bolt ons. His converter is costing power too though. What a car dyno's at isnt important though. They're just used for tuning, dyno numbers mean nothing.
I dynoed 302 and went 12.0X @ 114. :D

[gettinthere]

I dynoed 302 and went 12.0X @ 114. :D

:werd:

I dyno'd 428 on the mustang dyno and went 12.60 @ 120.6. :poke:

[topendlt1]

I dynoed 302 and went 12.0X @ 114. :D

:jif: :fluffy:

Hopefully you own an LS1. I own an LT1 and with 300 RWHP, It might pull a 12.9-13.3 , depending on tuning and tranny type, and thats with drag tires and subframe connecters. LT1's have torque. hp...uhh not so much

Im trying to change that about mine some :devil:

[LiquidFire350]

:jif: :fluffy:

Hopefully you own an LS1. I own an LT1 and with 300 RWHP, It might pull a 12.9-13.3 , depending on tuning and tranny type, and thats with drag tires and subframe connecters. LT1's have torque. hp...uhh not so much

Im trying to change about mine some :devil:
it was a 2001 Z28, my headers/duals/stall came off that car

[darrensls1]

I hear ya man. The car is not loud enough with the stock exhaust and a few extra ponies can't be a bad thing, right?

Start out with the two most basic of basics. Lid and catback. You can get a Lid from any number of sponsors for around $100. They net you 8-10 rwhp and can easily be installed yourself. Then you want a better sound so get either a cutout or catback. Cutouts are nice but not very refined. If you like it LOUD then this is the way to go. I recommend one with an electric switch. That way you can go from loud to stock in the flip of a switch. Comes in handy when officer friendly pulls out of nowhere :eek:

Catbacks are even better. They upgrade your pipes to 3" and give you a nice rumble that V8's should have. Avoid Flowmaster because it flows the worst and thus shows the least HP gains. Top of the line IMO is GMMG but at over $700 it's certainly not for everyone. My two favorites for moderate sound increase is Hooker or Magnaflow. My favorites for loud catback is TSP Rumbler or SLP loudmouth II.

If you get a less expensive catback/cutout and a lid it should be less then $500 spent for a solid 15 rwhp and a much better sounding car. Even if you mod nothing else, your car can breath alot better then it did stock and that's a good thing.

Good Luck. BTW if you have an A4 then at some point you would be very wise to consider a torque converter in the 3000-3600 range and tranny cooler :devil: