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Performance parts = horsepower

This is a discussion on Performance parts = horsepower within the External Engine forums, part of the LSx Technical Help Section category; If I was't to install 1. Flowmaster catback 2. Long tube headers 3. y pipe 4. LS6 Intake 5. 80mm ...

  1. #1
    Member blk_jaws's Avatar
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    Performance parts = horsepower

    If I was't to install
    1. Flowmaster catback
    2. Long tube headers
    3. y pipe
    4. LS6 Intake
    5. 80mm Throttle body
    6. 85mm MAF sensor
    7. Lid
    8. 3.73 gears
    What kind of horsepower gains am I looking at?

  2. #2
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    scratch #1 & #6 off your list......go with a Hooker CB or Magnaflow CB and keep your stock MAF

  3. #3
    Member blk_jaws's Avatar
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    Well even if the flowmaster does'nt produce great power I love the sound. I have a 80 series muffler on it now. 98 TA

  4. #4
    Junior Member JerseyLS1TA's Avatar
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    Ditch the Flowmaster, it may sound ok but it is one of the worst flowing catbacks. Keep the stock MAF and I would just have the stock T.B port/polished.

  5. #5
    Rice Hungry GottaHaveLS1's Avatar
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    I would say close or over 60 HP.

  6. #6
    Rice Hungry GottaHaveLS1's Avatar
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    Gutting the cats would help a lil too...

  7. #7
    Member blk_jaws's Avatar
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    Know one has answered my question about the power gains. I dont care if the flowmaster sucks to anyone, I would not trade the sound for the power.

  8. #8
    Member blk_jaws's Avatar
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    Thanks you GottaHaveLS1 for answering my question

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    Senior Member Zboner's Avatar
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    i say throw a tune in, and it could get 70.

  10. #10
    We'll be back... GatorSS's Avatar
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    #8 will have no effect on horsepower.

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    Quote Originally Posted by goose_von
    Know one has answered my question about the power gains. I dont care if the flowmaster sucks to anyone, I would not trade the sound for the power.
    That's the first time i've seen someone write that...if you insist on the flowmaster at least get a electric cutout, that way you can have sound and power when you want it.

  12. #12
    Senior Member Hurley711's Avatar
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    No need to get testy with the attitude. You ask about performance parts and hp gains and when we tell you Flowmaster won't give you gains you 180 and say I wouldn't trade the sound for power....well which one is it? Gains? or sound? We were just trying to steer you in the right direction for power gains which Flowmaster doesn't give a whole hell of alot of, if you wantt the Flowmaster cackle that's fine.

  13. #13
    member since may 2000 nhraformula's Avatar
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    Quote Originally Posted by goose_von
    If I was't to install
    1. Flowmaster catback
    2. Long tube headers
    3. y pipe
    4. LS6 Intake
    5. 80mm Throttle body
    6. 85mm MAF sensor
    7. Lid
    8. 3.73 gears
    What kind of horsepower gains am I looking at?
    flowmaster is about the worst catback out there, i had one.
    it did make 7 rwhp more than the stock exhaust though.

    anyways expect 7 rwhp from the flowmaster, about 30 from the headers, 10 from the ls6 intake, port the throttle body instead of getting a new one=about 7 rwhp,stay away from an aftermarket maf, lid=10 rwhp and gears=nothing.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  14. #14
    Slow'er'Ass Mr. Luos's Avatar
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    340-350 RWHP.

    Which is 35-45 over stock.

    Like the others have mentioned....Ditch the Flows. In my opinion, the Magnaflow sounds better and it is a fact it flows better.
    Stick with the stock MAF. Aftermarket ones have actually seen power declines, unless tuned for it.

    With two mods (SLP Loudmouth, SLP lid) I dyno'd 320/333.
    Add SLP 85mm MAF (mistake), SLP LT's (also mistake), LS6 intake I dyno'd 343/358.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  15. #15
    Member blk_jaws's Avatar
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    I'm not trying to be a smart elek, I just love the sound. On Horsepower TV on Spike TV every car they work on they almost always put a flowmaster on it, so I figured it was pretty good. Any ways I'm not going to be running it at the track, I just want it to be the meanest sounding and performing car in my town. So everyone will think twice before messing with it.

  16. #16
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    I'm going to say roughly a 40hp increase. I would highly recommend getting the stock TB ported and to keep the stock MAF. Are you an auto or 6 speed? If you're an auto, I also highly recommend a torque converter. Just my .02

  17. #17
    Senior Member SeVeReDiStOrTiOn's Avatar
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    cutout

  18. #18
    Member blk_jaws's Avatar
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    I have a a4

  19. #19
    Member blk_jaws's Avatar
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    Would I need a tune after headers

  20. #20
    Slow'er'Ass Mr. Luos's Avatar
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    Wouldn't need it.
    But you would get the most out of them with a good tune.

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