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Thread: Exhaust size for 4k

  1. #1
    1JZ FTW! Domestic Engineer chrisrundell69's Avatar
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    Default Exhaust size for 4k

    just wondering what sort of size exhaust people have had on there 4k. i dont wanna go to big, but i want better flow than stock one. had a little bit of carby work but thats about it. any suggestions on right sizes would be great.
    Past Cars: Blue TA22 2T, Green TA22 2TGEU, Orange RA28 18R, Green RA28 18R, Multicoloured RA28 18R, White JZZ20 Soarer 1JZ
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  2. #2
    Junior Member Backyard Mechanic
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    Default Re: Exhaust size for 4k

    i had a 2" on my 4k but only with one muffler at the end and it was pretty loud, oh also had extractors aswell.

  3. #3
    DIY Bloodline Domestic Engineer Talasas's Avatar
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    Default Re: Exhaust size for 4k

    Yeah I'd opt for 2", with a nice clean layout as much as possible.
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    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: Exhaust size for 4k

    i had 2" and it was very quiet. i had 2 resonators and a reverse flow 2" muffler (ESA nonbrand). not loud, no droning....
    this was with extractors.
    i can send pics if you want.

    1.75 would be fine tho, especially with not many mods.. 2" is probably overkill anyway.
    heck, even 1.5" will probably be ok..
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  5. #5
    1JZ FTW! Domestic Engineer chrisrundell69's Avatar
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    Default Re: Exhaust size for 4k

    Quote Originally Posted by oldcorollas
    i had 2" and it was very quiet. i had 2 resonators and a reverse flow 2" muffler (ESA nonbrand). not loud, no droning....
    this was with extractors.
    i can send pics if you want.

    1.75 would be fine tho, especially with not many mods.. 2" is probably overkill anyway.
    heck, even 1.5" will probably be ok..
    yeah i thought 2 inch would be the go cheers guys.
    and yeah if youve got pics that you could send that would be great.
    Past Cars: Blue TA22 2T, Green TA22 2TGEU, Orange RA28 18R, Green RA28 18R, Multicoloured RA28 18R, White JZZ20 Soarer 1JZ
    Present: Maroon GA70 Supra, FMIC, Adjustable Cams, SAFC II.......
    KE70- Stock as a rock.

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