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full exhaust installed

This is a discussion on full exhaust installed within the External Engine forums, part of the LSx Technical Help Section category; Got my car back from Midwest today. 2001 Z28 6sp with K&N FIPK, TSP 1 7/8 Headers, TSP ORY and ...

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    Member werewolf's Avatar
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    full exhaust installed

    Got my car back from Midwest today. 2001 Z28 6sp with K&N FIPK, TSP 1 7/8 Headers, TSP ORY and magnaflow cat back. With the tune up and dynotune I ended up with 340.9 hp @ 5382 rpm (367.5 HP with WCF figured in and I assume that is weather correction factor) and 350.9 LB/FT @ 4072 rpm (378.7 with WCF) on a mustang dynometer. They seemed surprised by the output for an CAI and exhaust with stock cam and heads. So far I am very happy with it. Not loud at part throttle cruise but announces herself with WOT with a slight rasp at 1800-2000 rpm part throttle.

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    '02 WS.6 / '07 Suburban

    Very cool! How was fitment on the exhaust?

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    Member werewolf's Avatar
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    little low at the ORY so I may try and add a bracket to pull tighter up to the floor and support it but no bangs or rattles yet. It did cause a cars alarm to beep when I started it at the Whataburger LOL. but overall quite happy so far
    pajeff02 likes this.

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    '02 WS.6 / '07 Suburban

    Any other plans for upgrades?

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    Member werewolf's Avatar
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    moser 12 bolt with 4.11s and wavetrac, and a new torque arm are waiting for me to get time to install so I can quit worrying about breaking an axle LOL

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    I guess my big question is do I really have a 367 whp engine or is that just dyno smoke show? I know ultimately when I get to the track again will be when I know the changes really did but I wont know if the engine or axle makes that biggest change

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    '02 WS.6 / '07 Suburban

    Here is a good article from the late GMHTP (RIP) on dyno correction factors. The preceding article in the series was also very informative.

    Link: Dyno Correction Factors - Real Wheel Horsepower - GM High-Tech Performance Magazine

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    Thanks for the link. I was having a hard time believing my stock long block was that healthy. I got lucky on this car as I picked her up for 6500 with 78k on the clock. 3400 lbs on the scale and 367 hp I am gonna have fun next trip to the track

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    Former Mopar Man 2002ssslp's Avatar
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    Quote Originally Posted by werewolf View Post
    little low at the ORY so I may try and add a bracket to pull tighter up to the floor and support it but no bangs or rattles yet. It did cause a cars alarm to beep when I started it at the Whataburger LOL. but overall quite happy so far
    I had the same problem with the low position of the OFY. Note: Avoid speed bumps. lol
    My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
    My wife has a 2004 GTO with the rare SAP, 18" wheels, K&N Cold Air System, MSD, Ported TB, Frost tune, Denso Iridium, Flowmaster cat-back, 3200 Yank, 75k

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    yea I have been paying attention to pulling into parking lots so far no speed bumps

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