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Thread: 4" inlet import style muffler??

  1. #1
    2>4 StupidBikerBoy's Avatar
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    Default 4" inlet import style muffler??

    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.

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    Newbie Photodude RBS's Avatar
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    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

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    Don Mon SiRed94's Avatar
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    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....


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    HEY! you there. Thighs's Avatar
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    dont be a sissy. just buy the race muffler. think about how many alarms you can set off!!
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    Don Mon SiRed94's Avatar
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    Quote Originally Posted by jesse4846
    dont be a sissy. just buy the race muffler. think about how many alarms you can set off!!
    haha agreed


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    always dirty.... SandM's Avatar
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    wtf kind of setup needs a 4" exhaust? ive seen 600+hp cars runnin 3"....



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    I miss Atlanta. Sol-Badguy's Avatar
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    Quote Originally Posted by stygiosracing
    wtf kind of setup needs a 4" exhaust? ive seen 600+hp cars runnin 3"....
    I was about to ask the saaame thing..

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    Drifter/Kneedragger
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    Quote Originally Posted by stygiosracing
    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.

  9. #9
    Banned s13slider®'s Avatar
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    say it with me guys. "no back pressure".

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    Who is John Galt? Echonova's Avatar
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    Ditch the exhaust and upgrade to a sewer pipe.

  11. #11
    h series
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    Quote Originally Posted by Echonova
    Ditch the exhaust and upgrade to a sewer pipe.



  12. #12
    1.5T AnTi-PooN's Avatar
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    get a nice muffler that size and then resonate the hell out of it for your quiet sound

  13. #13
    1.5T AnTi-PooN's Avatar
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    Quote Originally Posted by jesse4846
    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"

  14. #14
    Who is John Galt? Echonova's Avatar
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    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. It was straight piped, ended up putting a resonator on it. Can't tell you how many cutting wheels I went through...

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    YR88 Win! Romeo's Avatar
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    i think he is talking about the tip of the muffler.

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    Drifter/Kneedragger
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    Quote Originally Posted by 93_DA
    i think he is talking about the tip of the muffler.

    no, he wants a muffler with an inlet for 4" exhaust piping.

  17. #17
    A.D.I.D.A.S. §treet_§peed's Avatar
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    i have sen 800whp supras and RX7's wit 4 inch exhaust.. actually it is really deep and gurty sounding
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    Quote Originally Posted by s13slider
    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
    FS:new Snap on tools



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    ASC is for fools Blitanicle99's Avatar
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    3 inch is ***** ****. Im putting 6inch turbo back. However... 7.3 liter turbo diesel is a bit bigger of a motor.
    Honda RC51 SP1
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    A.D.I.D.A.S. §treet_§peed's Avatar
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    lol when i used to work at a trucki acessory store we used to put 6 inch exhaust on some diseil truck
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    1.5T AnTi-PooN's Avatar
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    Quote Originally Posted by §treet_§peed
    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

  22. #22
    ⎝⏠⏝⏠⎠ RandomGuy's Avatar
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    Quote Originally Posted by SiRed94
    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?

  23. #23
    www.jasontbarker.com speedminded's Avatar
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    Quote Originally Posted by RandomGuy
    judging by his sig, I'm guessing he has some american v8 swapped in there.

    LS1?
    Says LS7 on his myspace.

  24. #24
    www.jasontbarker.com speedminded's Avatar
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    Quote Originally Posted by StupidBikerBoy
    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.
    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.

  25. #25
    A.D.I.D.A.S. §treet_§peed's Avatar
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    Quote Originally Posted by -SkInNy-
    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
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  26. #26
    Torque is Awesome. itsnotarex's Avatar
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    Quote Originally Posted by s13slider®
    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.
    "I get worried when it STOPS leaking."

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