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  1. 07-23-2006, 05:48 PM #1
    Goatdriver
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    spice red metallic
    2006 GTO

    How much "real H.P." gained with catback

    I was wondering if anyone had any information on proven dyno Horsepower gains with any of the catback systems over stock on either LS-1 or LS-2 powered cars. I know Corsa, Borla, SLP etc. advertise gains in horsepower and gas mileage but if I'm gonna spend money on one I want to get more than a deeper rumble with nothing else.
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  2. 07-23-2006, 05:58 PM #2
    mrr23
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    black
    2014 camaro 2ss/rs

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    stock vs bassani tru-dual exhaust on my 00 formula
    Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge, some checkered stripes, drilled/slotted rotors, ZL1addons Stealth wickerbill, Ruxifey LED side markers
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  3. 07-24-2006, 07:55 AM #3
    STOCK1SC
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    I don't think they make it anymore but I had the SLP 2 on the left exhaust and it gave me some grunt and actually made more power than the fake dual setups you see everywhere, hell it made more power than all the other SLP exhaust except for the loudmouth.
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