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How much hp do you think i'll gain?

This is a discussion on How much hp do you think i'll gain? within the Firebird / WS6 forums, part of the Vehicle Specific category; I 'm gonna wait till i get the rest of the stuff i ordered this weekend to put my lid ...

  1. #1
    Member sfletch2000's Avatar
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    86 Buick Grand National
    02 WS6-M6 407 RWHP

    How much hp do you think i'll gain?

    I 'm gonna wait till i get the rest of the stuff i ordered this weekend to put my lid and bevel on so that i'll see a night and day difference. Just wondering how much hp i can expect to gain from the these mods.

    MTI Lid
    K&N
    Smooth Bevel
    Pacesetter Jet Coated Headers
    Y-pipe
    Underdrive Pulley
    Plus i'm gonna Gut my cats


    Already have flowmaster catback, i know they suck came on the car when i bought it probably will replace the muffler in the next couple of months.

    Also putting on these but no power increase
    Sub frame connectors
    Boxed Lower control arms
    160 Thermo

    Next its drag radials

  2. #2
    Senior Member Danger731's Avatar
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    45 rwhp +/- 5 horses, I'de guess a final of 345-355 ?
    04 C5 A4 Torch Red

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    02 Z/28 M6 Onyx Black All Options - Sold

  3. #3
    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by Danger731 View Post
    45 rwhp +/- 5 horses, I'de guess a final of 345-355 ?
    I'm no expert but I wouldn't say that's accurate. You'll probably get around 10hp for the intake and thermostat. Plus another 20-25 hp for exhaust. are you getting it tuned? that will net you more hp. The SFC and other stuff will help a lot and make the car feel stronger.
    1999 Trans Am M6
    SLP Short Throw, Lid and CAI, BMR STB and SFC, UMI PHB, Pacesetter LT's and ORY, Magnaflow Catback, DMH 3" E-Cutout, LS7 Clutch, Motive 4.10, 160 T-Stat, MSD, !AIR, !EGR, 17x9.5 Chrome C6's wrapped in Hankook 275/40/17

    Tuned at Mongillo Motors in New Haven, CT

  4. #4
    Iraq money well spent. TRY ME GT's Avatar
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    A very noticable difference. be sure to get the car tuned after your done. that alone will make a huge difference. Id say 40-50 hp. def a good gain man. enjoy!

  5. #5
    Iraq money well spent. TRY ME GT's Avatar
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    NOTE: when you change the thermostat it will NOT make the car run colder until you get it tuned. I know that sounds stupid because it is a mechanical thermostat, but the computer wont let it do that. have your fans changed to kick in at a lower temp.

  6. #6
    Member sfletch2000's Avatar
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    86 Buick Grand National
    02 WS6-M6 407 RWHP

    Ok that maybe a problem, not sure if anyone tunes LS1's out here in Bakersfield but i'll have to check into it. We do have 300,000 people here so there has to be somebody.

  7. #7
    Member sfletch2000's Avatar
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    86 Buick Grand National
    02 WS6-M6 407 RWHP

    Just remembered i'm an hour and a half away form oxnard ca, where granatelli is located. Gonna have to make a trip out there in a few weeks after i put my mods on.

  8. #8
    Iraq money well spent. TRY ME GT's Avatar
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    good idea. $ well spent

  9. #9
    Member GMS Fleet's Avatar
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    Quote Originally Posted by sfletch2000 View Post
    Just remembered i'm an hour and a half away form oxnard ca, where granatelli is located. Gonna have to make a trip out there in a few weeks after i put my mods on.
    What a small world I'm Mike the person who talked to you yesterday. Like we discussed for custom tuning check out A&A Corvette in Oxnard. Supposively they are the best LS1 tuners out there but they are usually extremely busy. If you ever need a welder, Ken'z Muffler in Oxnard does a phenominal job.

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