Exhaust questions
Thread Starter
Teching In
Joined: Aug 2005
Posts: 10
Likes: 0
From: Myrtle Beach, SC
Exhaust questions Hey all,
I plan on buying a LS1 F-body sometime in the near future (probably before the end of the year) which will be my daily driver.
I plan on doing bolt-ons (intake, full exhaust, tune) soon after a buy the car, then going with H/C sometime next year.
Because the car will be a daily driver (50+ miles a day) it needs to be quiet enough so that I won't get a headache while driving.
I've heard that true duel exhaust systems are very loud, plus I plan on lowering my car, so I'm pretty sure that choice is out of the picture.
Would a good choice for me be going with a Y-pipe and cat-back, but with a cutout so I can increase the flow when needed?
Also, is this the stock cat-back that comes on SS camaros? How well does this system flow? Would it be too restrictive when used with headers and no cats?
Thanks for all your help.
I plan on buying a LS1 F-body sometime in the near future (probably before the end of the year) which will be my daily driver.
I plan on doing bolt-ons (intake, full exhaust, tune) soon after a buy the car, then going with H/C sometime next year.
Because the car will be a daily driver (50+ miles a day) it needs to be quiet enough so that I won't get a headache while driving.
I've heard that true duel exhaust systems are very loud, plus I plan on lowering my car, so I'm pretty sure that choice is out of the picture.
Would a good choice for me be going with a Y-pipe and cat-back, but with a cutout so I can increase the flow when needed?
Also, is this the stock cat-back that comes on SS camaros? How well does this system flow? Would it be too restrictive when used with headers and no cats?
Thanks for all your help.
Yeah thats the dual dual that comes on the SS as an option. Flows really good and is one of the quitest. I would also just throw a cutout in the I pipe for the extra noise and hp when you need it (probley only a few hp). The SLP dual dual is an excellant choice for a headache free ride 
stock ehaust is very restrictive. you should go with a good y-pipe and cat back. if you want something thats not too loud with a H/C i would recommend going with the hooker cat back. I hope you have some money saved up because it all starts to snowball. I would say do suspension first, for the fact why have the power if you can't put it to the ground. If you put a cut out on make sure its stainless steel.
Thread Starter
Teching In
Joined: Aug 2005
Posts: 10
Likes: 0
From: Myrtle Beach, SC
Originally Posted by black01_WS6
stock ehaust is very restrictive.
Originally Posted by black01_WS6
you should go with a good y-pipe and cat back. if you want something thats not too loud with a H/C i would recommend going with the hooker cat back. I hope you have some money saved up because it all starts to snowball. I would say do suspension first, for the fact why have the power if you can't put it to the ground. If you put a cut out on make sure its stainless steel.
The reason I asked is because I am currently looking a buying a Camaro SS with the SLP cat-back and cut-out. When I put on headers and a Y-pipe, should I change the rest of the exhaust or keep it as it is?
TECH Fanatic
Joined: Jan 2003
Posts: 1,415
Likes: 1
From: San Diego/Schertz,Texas
with the slp dual/dual, headers wont make the TOO loud. yes it will be louder but will be just fine driving long distances.
i just drove from san antonio to san diego and back. had no problems with my exhaust(check my sig). headers and dual/dual will be even quieter
i just drove from san antonio to san diego and back. had no problems with my exhaust(check my sig). headers and dual/dual will be even quieter
the stock y-pipe is very restrictive from the factory, ss or z28. the hooker exhaust is not that loud until you put a cam or heads and cam. do the whole exaust at the same time and save your self the time. im not knocking other exhaust systems, I have heard many others with and w/o cams and thats why I picked my exhaust. The best advice for anyone looking for exhaust is to listen to other peoples cars, and to do some research, and to know what your plan is with the car. different exhaust systems are better for different applications. it comes down to what you want.
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Launching!
Joined: Aug 2005
Posts: 227
Likes: 0
From: Burlington, NC
Go with true duals that goes over the axle and exit out the rear from beneath the bumper in the stock location. Stop and think a minute. If you can lower the car with a stock exhaust system you can also lower the car with a true dual system where both pipes follow the same path as the single exhaust system followed. About quiet, should you run mufflers why would it be loud? I have true duals on my Camaro with both pipes going over the axle and exiting out the rear from beneath the bumper in the stock location. I used straight through, noise cancelling mufflers and it is not loud. I use my car as an every day driver also, so it has to be quiet inside the car but I did not want it loud outside the car either. That thing about true dual are loud is a bunch of crap. If you want it quiet, then put mufflers on it to make it quiet. I chose the straight through, noise cancelling mufflers for two reasons. First; they are straight through so no restriction, Second; they silence the exhaust but at the same time, they give me that muscle car tone. You will get a lot of misinformation on some of these forums because the people that trying to inform you are misinformed. Talk to people that use their cars the same way you plan to use yours and see what they have done. Also talk to the guy at you local muffler shop. He can probably help you out a lot. True dual is the only way to go. Do it and do away with that STUPID "Y" pipe system.
Last edited by JEB Garner; Nov 13, 2005 at 11:29 PM.
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Verdad Gallardo Thread Starter
Teching In
Joined: Aug 2005
Posts: 10
Likes: 0
From: Myrtle Beach, SC
Originally Posted by JEB Garner
Go with true duals that goes over the axle and exit out the rear from beneath the bumper in the stock location.
Also, does anyone know what kind of exhaust this is?
Staging Lane
Joined: May 2003
Posts: 84
Likes: 0
From: salem, oregon formerly from alaska
custom is all iv'e found. I think a catted system sounds more comfortable, but opinions vary alot around the world. Im in the same boat. I want a good sounding system, but i also want performance at a quiet level. Believe me, ive been doing research. I may install cats in my system for only one reason. To mellow the tone. I don't want the law enforcement to look at me every time i get on it, but I want max performance at the track. An added benefit to adding cats will mellow the exhaust note and not cost much hp. AAMOF factory cats with no muffo lers passed the sound requirements at the last race i was at. I may add aftermarket cats with an aftermarket exhaust system. here in the near future. this would require cutouts for full on drag racing to maximize flow and hp pontential.
Staging Lane
Joined: May 2003
Posts: 84
Likes: 0
From: salem, oregon formerly from alaska
I have heard the same thing. After I had the flowmaster installed, I read that. It sounds good, but doesn't do anything for hp gain on my ls1 compared to stock, although the flowmaster 3" single in and out lt1 kit kit with one 3" tailpipe, made my lt1 car faster. I read that the regular 40 series and the crossflow mufflers don't work on f-bodies due to flow issues. The muffler on the lt1 single kit was way bigger in size than a normal flowmaster, I think it was based on a big block muffler but I havent confirmed that yet.
Staging Lane
Joined: May 2003
Posts: 84
Likes: 0
From: salem, oregon formerly from alaska
thanks black01_WS6, I agree. Flowmaster is a scam. Ive owned alot of mufflers, and flowmaster is the worst from a flow standpoint. I recommend reading the exhaust issue of popular hot rodding, they explain in depth the zero loss hp exhaust system. they explain the difference between pulse evacuation and cfm required by mufflers. Great info.
