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View Full Version : 4" inlet import style muffler??


StupidBikerBoy
11-24-2007, 08:19 AM
Anyone know where I can find a good 4" inlet muffler? I have found "race" mufflers in that size but would prefer a more quiet "street" type. :goodjob:
RBS
11-24-2007, 12:12 PM
doubt there be any, your best bet would be to buy a nice street muffler of a different inlet size then make it fit by welding
SiRed94
11-25-2007, 12:25 PM
uhm... if you cut the 2.5" pipe running into the canister off and make the inlet to a 4" the inside baffles are still going to be 2.5" and if you remove those then that will not be a muffler anymore... and the race pipe would be more quiet than that.... you could always run the exhaust through two race mufflers... but unless you have alot of displacement and/or are boosted with a huge ass turbo... the 4 inch muffler is really unnecessary....
Thighs
11-25-2007, 12:31 PM
dont be a sissy. just buy the race muffler. think about how many alarms you can set off!!
SiRed94
11-27-2007, 09:46 AM
dont be a sissy. just buy the race muffler. think about how many alarms you can set off!!
haha agreed
SandM
11-27-2007, 10:17 PM
wtf kind of setup needs a 4" exhaust? ive seen 600+hp cars runnin 3"....
Sol-Badguy
11-28-2007, 09:28 AM
wtf kind of setup needs a 4" exhaust? ive seen 600+hp cars runnin 3"....
I was about to ask the saaame thing.. :thinking:
HiPSI
11-29-2007, 07:36 PM
wtf kind of setup needs a 4" exhaust? ive seen 600+hp cars runnin 3"....


4" is overkill for his setup, but to each their own.
s13slider®
11-29-2007, 07:39 PM
say it with me guys. "no back pressure".
Echonova
11-29-2007, 07:50 PM
Ditch the exhaust and upgrade to a sewer pipe.
an0therh22
11-29-2007, 07:56 PM
Ditch the exhaust and upgrade to a sewer pipe.
:yes:
AnTi-PooN
11-29-2007, 10:09 PM
get a nice muffler that size and then resonate the hell out of it for your quiet sound
AnTi-PooN
11-29-2007, 10:11 PM
dont be a sissy. just buy the race muffler. think about how many alarms you can set off!!

that would be crazy cuz i set off alarms with my 2"
Echonova
11-29-2007, 10:42 PM
LOL, I really can't talk. I'm running some custom s13 3.5" JDM tyte titianium exhaust the came off the boat from the motherland on my stock psi SR20DET.:lmfao: :lmfao: :lmfao: :lmfao: :lmfao: It was straight piped, ended up putting a resonator on it. Can't tell you how many cutting wheels I went through...
Romeo
11-30-2007, 06:46 AM
i think he is talking about the tip of the muffler.
HiPSI
12-01-2007, 06:07 PM
i think he is talking about the tip of the muffler.


no, he wants a muffler with an inlet for 4" exhaust piping.
§treet_§peed
12-01-2007, 06:20 PM
i have sen 800whp supras and RX7's wit 4 inch exhaust.. actually it is really deep and gurty sounding
GT-S Boy
12-02-2007, 12:34 PM
say it with me guys. "no back pressure".

a little bit of backpressure is good for NA cars, i don't remember why but i learend that in my automotive class
Blitanicle99
12-02-2007, 06:20 PM
3 inch is ***** ****. Im putting 6inch turbo back. However... 7.3 liter turbo diesel is a bit bigger of a motor.
§treet_§peed
12-02-2007, 09:32 PM
lol when i used to work at a trucki acessory store we used to put 6 inch exhaust on some diseil truck
AnTi-PooN
12-02-2007, 10:10 PM
i have sen 800whp supras and RX7's wit 4 inch exhaust.. actually it is really deep and gurty sounding

i wanna see pics of ur supra i love those
RandomGuy
12-03-2007, 01:57 AM
but unless you have alot of displacement and/or are boosted with a huge ass turbo... the 4 inch muffler is really unnecessary....
judging by his sig, I'm guessing he has some american v8 swapped in there.

LS1?
speedminded
12-03-2007, 07:53 AM
judging by his sig, I'm guessing he has some american v8 swapped in there.

LS1?Says LS7 on his myspace.
speedminded
12-03-2007, 08:12 AM
Anyone know where I can find a good 4" inlet muffler? I have found "race" mufflers in that size but would prefer a more quiet "street" type. :goodjob:What do you consider as an "import" muffler? Round? Oval?


Magnaflow makes 4" mufflers and resonators, you could always cut the outlet side off about 1/4 to 1/2" from the canister and weld on a decent looking tip... http://www.hottexhaust.com/detail.asp?PRODUCT_ID=14419 ...but bonestly if it was me i'd put an aftermarket Corvette exhaust on it, might take a little bit of fabrication and creativeness with the bumper but would look and sound great.
§treet_§peed
12-03-2007, 11:52 AM
i wanna see pics of ur supra i love those lol i wish i had one... but i have seen them at dynos and at car shows with 4 inch exhaust
itsnotarex
03-04-2008, 04:24 PM
say it with me guys. "no back pressure".

At 3" there is little to no backpressure. At 4" you're just making extra noise.

You could just run an open DP with a little turndown....as I assume that we're talking about a boosted setup here. Plus, a 4" pipe, even with a muffler, might actually make your car louder than if you had nothing at all. Like, I have a friend who has a wrx with an Ansa exhaust, and it's actually louder than when he's running an open DP. It's like the piping adds some sort of resonance to the tone.

If you're running an NA setup, for the love of God do not run a 4" exhaust. NA motors need some backpressure to run properly. You'll probably lose power and at worst burn a valve.

I say go to midas or something and have them make you a 2.5" straight pipe with a resonator. :goodjob: