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Cutout Size

This is a discussion on Cutout Size within the External Engine forums, part of the LSx Technical Help Section category; First of all, what diameter is the intermediate pipe on a 98 SS, Second, for all of you that do ...

  1. #1
    Senior Member ss~zoso~ss's Avatar
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    Cutout Size

    First of all, what diameter is the intermediate pipe on a 98 SS,

    Second, for all of you that do have cutouts where did u have them installed on the system, and where did u get a turndown

    Three, how much louder , how much performance do u gain ( not necessarily numbers but can u feel it?)

    Jeff
    98' SS Convertible Camaro-76k-Build # 1471, Cragar SS rims, RK SFC's, MAC Panhard, LSX Tune, Shaner S3,
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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    I think the intermediate pipe is not quite 3" Just a tad smaller.

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    Senior Member mrr23's Avatar
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    intermediate pipe is 2.75". get a 3" cutout. here's my webpage back when i had one. results on that page.

    http://www.stealthram.com/qtpcutout.html

  4. #4
    Senior Member ss~zoso~ss's Avatar
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    thanks a bunch man, this and plugs+wires will be the only mods i can afford

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    Member cobrahunter's Avatar
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    I put mine a little after the passenger side CAT.


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    Veteran 0rion's Avatar
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    Mine is under the rear seat. I think you'll be happy with the cutout. Are you still running cats? Back when I had cats I ran mine open 24/7.

  7. #7
    Senior Member ss~zoso~ss's Avatar
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    SS: NBM, tan top
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    yea i still have cats, i want to get a 3 inch Y with high flows but i dont have the money yet

  8. #8
    Senior Member ss~zoso~ss's Avatar
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    does anybody know where i can buy a turndown that bolts onto the cutout

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Jeg's

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    Senior Member ss~zoso~ss's Avatar
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    SS: NBM, tan top
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    i have looked there, couldnt find it

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    Senior Member ss~zoso~ss's Avatar
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    alright i found it but they're too long, i've seen people that have short ones i need one of those

  12. #12
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    I could make you a set?

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    Member Z28LS1's Avatar
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    yeah i through in a cut out for sound only.. if u ever decide to run an ory without cats, you won't want the cutout open, you need back pressure for power. since you still have a stock exhaust though, you should feel an increase of about 6-7 i think. and it'll sound niiice

  14. #14
    Senior Member ss~zoso~ss's Avatar
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    yea i'm hopin for that, i know the power aint much but i hope it sounds good

  15. #15
    Member Z28LS1's Avatar
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    its a decent increase and hey, every little bit counts, and the cut out will definitly sound good good luck man

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    Member Z28LS1's Avatar
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    yo, uconn just rejected my app.. lol

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Why don't you just go with the Flowtech turndowns with 3 bolt flanges allready welded on and cut it to length?

  18. #18
    Senior Member ss~zoso~ss's Avatar
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    Quote Originally Posted by Z28LS1 View Post
    yo, uconn just rejected my app.. lol
    thats too bad, how did u do in high school?

  19. #19
    Senior Member ss~zoso~ss's Avatar
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    SS: NBM, tan top
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    Quote Originally Posted by 9t8z28 View Post
    Why don't you just go with the Flowtech turndowns with 3 bolt flanges allready welded on and cut it to length?
    probably end up doing that

  20. #20
    Member Z28LS1's Avatar
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    im finishing with a 3.7 gpa.. they probably didnt want me cause i was in the low 50% on sats and im outa state.. o well, good school though lol

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