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04 GTO and 00 TA stock dynos

This is a discussion on 04 GTO and 00 TA stock dynos within the Dyno Information forums, part of the Racing Forums category; About a year ago, I dynoed my bone stock 04 GTO A4, and it put out 276 rwhp. I have ...

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    04 GTO and 00 TA stock dynos

    About a year ago, I dynoed my bone stock 04 GTO A4, and it put out 276 rwhp. I have since sold it and just a few weeks ago dynoed my 00 TA A4. It dynoed 276rwhp. This surprised me, as the GTO is rated at 350 hp and the TA 305. Are the TA's that underated? This was the same shop and the same dyno. I am not too sure about the weather, but I don't think the temp was a whole lot different.
    Shawn

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    HUNTER S. THOMPSON FAN Raoul-Duke's Avatar
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    Quote Originally Posted by shawn84&92 View Post
    About a year ago, I dynoed my bone stock 04 GTO A4, and it put out 276 rwhp. I have since sold it and just a few weeks ago dynoed my 00 TA A4. It dynoed 276rwhp. This surprised me, as the GTO is rated at 350 hp and the TA 305. Are the TA's that underated? This was the same shop and the same dyno. I am not too sure about the weather, but I don't think the temp was a whole lot different.
    Shawn
    yeah thats a lil low but as far as the two compared...gm just rated them at 350 so they sold better...the engine is identical down to every last bit to ur t/a's ls1...except for the gto fuel rail covers...and yes they did underate them that much
    01 m6 z28 - lid / lt headers / 3' ory w no cats / flowmaster catback w 3' dmh e-cutout / nelson pcm tune

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    Pathelogical Liar BlackLT1Z28's Avatar
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    The GTO is rated higher for the same reason as the corvette, they both came from the factory with true dual exhaust. The f-body LS1's didn't. They came with a y-setup. Sure, they are the same engine, just set up differently. That's like giving one fuctional ram air from the factory and giving the other a restrictive air box. Same engine, different setups.

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    Rice Hungry GottaHaveLS1's Avatar
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    ls1 ta = ls1 gto except GTO is heavier. I hate how they underrate shit, ppl are always like "u got the TA with 305 hp, it can't compare to the vette"
    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

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