Best exhaust for reducing rasp

[charliehaley]

I have a 99 firebird with the 3.8 and am trying to find the queitest and best exhaust for reducing rasp. I of course want to gain performance but i can deal with a little less performance for a better sound. I would like to keep exhaust levels down to as close as stock. Any suggestions would be appreciated.

[TheGr8Schlotzky]

Re: Best exhaust for reducing rasp

I think I would do Pacesetters into a high flow cat, 2.5" piping with a bullit type straigh-thru muffler for your I-pipe into a borla pro xs muffler. Good sound and pretty quiet.

[gugdathug3]

Re: Best exhaust for reducing rasp

borla pro xs muffler or a summit turbo muffler (dynomax) are too pretty cheap mufflers that have minimal rasp.

[IDoVoodoo]

Re: Best exhaust for reducing rasp

get a real dynomax muffler. been the best muffler i've had yet.

[charliehaley]

Re: Best exhaust for reducing rasp

I think I would do Pacesetters into a high flow cat, 2.5" piping with a bullit type straigh-thru muffler for your I-pipe into a borla pro xs muffler. Good sound and pretty quiet.

That is the best and most detailed response i have been able to get to my question yet. Could you give me a few more details on this set up and a price range? Money is somewhat tight right now but im willing to wait to get the right sound. Also, if at all possible i would like to keep my dual exhaust.

[Meatyshells]

Re: Best exhaust for reducing rasp

get one of these mufflers

[xmetallicaxguitaristx]

Re: Best exhaust for reducing rasp

No this one

[BigNic]

Re: Best exhaust for reducing rasp

my magnaflow dual outlet cat back sounds good and deep and clear but thats my opinion

[DeuceX]

Re: Best exhaust for reducing rasp

What other mods do you have done?

[charliehaley]

Re: Best exhaust for reducing rasp

What other mods do you have done?

None at the moment other than than taking off the cat. I wanted to save the $200 to put towards new exhaust. I plan maybe a cold air and high flow lid but now much performance wise other than that. At least not yet.

[JohnnyC]

Re: Best exhaust for reducing rasp

Get a 3" in/out cat, make an S-pipe or have one made, and get 3" pipe back to a summit 3" in/out muffler. I have it on pacesetter headers and it's an awesome sound under throttle but quiet otherwise.

[charliehaley]

Re: Best exhaust for reducing rasp

I am really liking the idea of the bullet style muffler on top of a regular cat back and a high flow cat. I might be asking for a little too much here but i really like how the sound level is with stock but i would like a deeper tone. I like to not hear in much inside the car below say 2000-2500k RPMs but a good sound when you get on it. Could this be acheived with pacesetters, a high flow cat, 12'' or 18'' magnaflow bullet style muffler, and a regular magnaflow muffler. I would most likely get 2.5'' because i hear it is quieter and i would also replace the s-pipe. And i have also read that cutouts reduce noise while closed. Does anyone have anything to say about that?

[IDoVoodoo]

Re: Best exhaust for reducing rasp

^ sounds like a great setup to me

[DeuceX]

Re: Best exhaust for reducing rasp

For size, would doing 2.5" or 3" produce better sound? I was planning on 3", because I'm planning on putting some FI and/or a V8 in the car down the road. (Prolly just FI). But, I don't want a ricer sounding Bird while I wait to get boosted >.>

[JohnnyC]

Re: Best exhaust for reducing rasp

with a 2.5" exhaust the gases exit the pipes faster with more speed and intensity and that, I think, would produce a louder sound than a 3". 3" exhaust flows better anyway.

Speaking from experience, my 2.5" flowmaster american thunder catback made my car sound like a weed whacker on full throttle. My 3" custom exhaust sounds richand deep but quiet below 2500rpm