exhaust size?
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Thread: exhaust size?

  1. #1
    Greenhorn
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    exhaust size?

    Hello, I have a 2013 Si sedan. I would like to replace the cat and resonator with straight pipe. I was curious if anyone already knew the diameter before and or after these components? Also maybe the length i'll require for each. Thank you.

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  3. #2
    Big Timer!!! kevvo21's Avatar
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    My own personal pro tip... don't do it, it sounds horrible, it's loud and raspy but hey that's just my opinion.

    But the stock exhaust piping size is 2.5".

    If you want a loud exhaust, I suggest just getting a 3" skunk2, or a 2.75" or 3" Invidia N1 exhaust. If your future plan is to get a downpipe (assuming catless) then I would suggest getting an even quieter exhaust (Q300, Fullrace, Welded Vibrant Muffler on a 3" Piping) than those I just suggested.
    RRCoupe and twoawwsome like this.
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  4. #3
    Top Dawg!! bfaided1984's Avatar
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    Quote Originally Posted by kevvo21 View Post
    My own personal pro tip... don't do it, it sounds horrible, it's loud and raspy but hey that's just my opinion.

    But the stock exhaust piping size is 2.5".

    If you want a loud exhaust, I suggest just getting a 3" skunk2, or a 2.75" or 3" Invidia N1 exhaust. If your future plan is to get a downpipe (assuming catless) then I would suggest getting an even quieter exhaust (Q300, Fullrace, Welded Vibrant Muffler on a 3" Piping) than those I just suggested.
    Don't forget the buddy club, thing is loud as hell.
    Whenever I'm suffering from Insomnia, I just look at a picture of a Toyota Camry and I'm straight off.
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  6. #4
    Top Dawg!! bfaided1984's Avatar
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    FKX Racing has a test pipe that is 2 3/4 diameter.
    Whenever I'm suffering from Insomnia, I just look at a picture of a Toyota Camry and I'm straight off.
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  7. #5
    Super Mod's Pet 12FG4Rallye's Avatar
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    Just run open downpipe bro screw it.
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  8. #6
    Nooblets
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    Quote Originally Posted by 12FG4Rallye View Post
    Just run open downpipe bro screw it.
    Cut a hole in the hood and run an exhaust pipe through it.

  9. #7
    Top Dawg!! bfaided1984's Avatar
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    Quote Originally Posted by twoawwsome View Post
    Cut a hole in the hood and run an exhaust pipe through it.
    Nah its all motor, gotta run it thru the fender. Hood is for turbos, gotta make sure everyone knows you're boosted.
    twoawwsome likes this.
    Whenever I'm suffering from Insomnia, I just look at a picture of a Toyota Camry and I'm straight off.
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