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Cut Outs

This is a discussion on Cut Outs within the External Engine forums, part of the LSx Technical Help Section category; Is anyone running cut outs on there car? Im running a slp system and wanted to try them out. would ...

  1. #1
    Junior Member jz28's Avatar
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    Cut Outs

    Is anyone running cut outs on there car? Im running a slp system and wanted to try them out. would it be louder? Pics anyone? oh yea i'm planning on eliminating the cats at the same time..

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    Member ProwlerZ's Avatar
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    let me be the first to officially inform you of the "search" tool... lol.

    Seriously though, yeah, you're bypassing almost all of the exhaust, so it'll be a lot louder. If you have LTs, it may very well be too loud to just leave open all the time, so either go electric, or get real used to laying on your back and fussing with wing nuts!
    She's baaaaaccccck...

    '02 Z/28 M6 Hardtop

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    your parts guy!!! 1fastcamarosss11's Avatar
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    trans am 00 ws6
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    pm me if you need a brand new qtp 3 inch. i do have one for sale.

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    Member SLP02SS's Avatar
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    02 Camaro SS S.O.M.
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    i got lt's, ory, no cats and one cutout, i drive 99% of the time with it open, its not bad when crusing around and low rpms but when you holly $h!t
    its loud!!! i like it. its not as bad as you think it would be just do it, it would def sounds better if you have lt's ive heard them with just manafolds and it doesnt sound as badass. Mr louis has a video of his on here look it up he has two cutouts.

    02 som SS #4818 m6 all SLP options, cme, lt's, ory, e-cutout, lowered(slammed), Pro 5.0, 4:10s, boltons, 19" CCW 505A'S, 365rwhp 379ftlbs
    07 silverstone TBSS matching SS hood, cai, exhaust, HP tuners, DJM/Beltech, DAILY DRIVER

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    Member fxgs's Avatar
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    Quote Originally Posted by 1fastcamarosss11 View Post
    pm me if you need a brand new qtp 3 inch. i do have one for sale.
    Have an electric QTP in my SS, works great.
    F.Y.I.: Just had my SS dyno tuned and when we ran it with the cutout open, I picked up (only) 4 rwhp but 14 ft/lbs of torque at the rear wheels.

  6. #6
    Junior Member OH ONE ES ES's Avatar
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    im runnin a 3" qtp elec. and i love it, i just got manifolds now and it sounds awsome, wot is wild, and when a city police drives around just switch er off.

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    SS Driver aerojt's Avatar
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    I am in the process of getting the parts for my electric cutout. Can anybody on here share how they wired it and where they tied in for power? Maybe some pictures as well?? Thanks so much for your help.

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    Member SLP02SS's Avatar
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    02 Camaro SS S.O.M.
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    Quote Originally Posted by fxgs View Post
    Have an electric QTP in my SS, works great.
    F.Y.I.: Just had my SS dyno tuned and when we ran it with the cutout open, I picked up (only) 4 rwhp but 14 ft/lbs of torque at the rear wheels.
    really ive been wanting to dyno mine open to see how much more i lost or gained, i know i lost a little low end torque, i can really feel the difference when it is open but cant stand a quiet car so i run it open

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    Member fxgs's Avatar
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    Quote Originally Posted by SLP02SS View Post
    really ive been wanting to dyno mine open to see how much more i lost or gained, i know i lost a little low end torque, i can really feel the difference when it is open but cant stand a quiet car so i run it open

    Quote:
    Originally Posted by fxgs
    Have an electric QTP in my SS, works great.
    F.Y.I.: Just had my SS dyno tuned and when we ran it with the cutout open, I picked up (only) 4 rwhp but 14 ft/lbs of torque at the rear wheels.


    really ive been wanting to dyno mine open to see how much more i lost or gained, i know i lost a little low end torque, i can really feel the difference when it is open but cant stand a quiet car so i run it open

    Actually my torque #'s were up all across the curve.

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    LTX N20LT4's Avatar
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    Have Kooks 1-7/8's, ory, B&B Tri-Flo with QTP 3" electric cut-out. The car made 14rwhp peak more decap'd on the squeeze, and showed a substantial increase in the upper rpm's versus closed exhaust. Performance is night and day difference on my car with the cut out open, much better top-end.

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    Member SLP02SS's Avatar
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    02 Camaro SS S.O.M.
    07 Trailblazer SS AWD

    mine just seems to pull alot harder when its closed, maybe its cause of the gears

  12. #12
    formally 01 T/A 0verkill's Avatar
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    "Arrest Me Red"
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    where are you all puting them in at? i know some have 1 and others have 2. im geting a set of lt's here sone and was thinking of puting one in to. at the moment i all ready have a magnaflow cat back.

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    Senior Member mrr23's Avatar
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    Quote Originally Posted by aerojt View Post
    I am in the process of getting the parts for my electric cutout. Can anybody on here share how they wired it and where they tied in for power? Maybe some pictures as well?? Thanks so much for your help.

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

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by SLP02SS View Post
    mine just seems to pull alot harder when its closed, maybe its cause of the gears
    You mean down low? Cause I'm running completely open right now (untuned) and mine is a little doggish down low, but mid range and up top it pulls like a mother!!! I'm goin td's, so 2 cutouts will be in order for me

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    Member SLP02SS's Avatar
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    02 Camaro SS S.O.M.
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    Quote Originally Posted by 01ws6er View Post
    You mean down low? Cause I'm running completely open right now (untuned) and mine is a little doggish down low, but mid range and up top it pulls like a mother!!! I'm goin td's, so 2 cutouts will be in order for me
    yep

  16. #16
    Junior Member jz28's Avatar
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    Very helpful input fellas, thanks.

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    2000 Z28

    Sorry to hijack, but didnt want to make another post about cut-outs.

    Tell me if this would work.

    LT's with a ORY, when the ORY connects to form one pipe, place the Cut-Out there, then leave the rest of the exhaust as-is. I don't see a problem with this, but I havnt been under the car to see if its possible.

    Any input?

  18. #18
    your parts guy!!! 1fastcamarosss11's Avatar
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    Quote Originally Posted by SleepingZ28 View Post
    Sorry to hijack, but didnt want to make another post about cut-outs.

    Tell me if this would work.

    LT's with a ORY, when the ORY connects to form one pipe, place the Cut-Out there, then leave the rest of the exhaust as-is. I don't see a problem with this, but I havnt been under the car to see if its possible.

    Any input?
    most go under the pass side rear seat the is a nice open spot there.

  19. #19
    Member squee's Avatar
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    Do you think they would offer any real increase in power with something like the Bassani TD setup?

  20. #20
    formally 01 T/A 0verkill's Avatar
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    i was talking to the local ls1 shop and he was saying that it all depends on what you have for power and what cat back you have. if you have a magnaflow you wouldnt need a cut out till you get to the 450 hores mark.

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