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How much hp gain with straight pipes ?

This is a discussion on How much hp gain with straight pipes ? within the External Engine forums, part of the LSx Technical Help Section category; how much hp gain would you get on straight pipes on a 98 z28 (ls1) its stock besides for lid ...

  1. #1
    The Red Reaper 98Z28importslayer's Avatar
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    1998 Camaro Z28 T-Top A4

    How much hp gain with straight pipes ?

    how much hp gain would you get on straight pipes on a 98 z28 (ls1) its stock besides for lid and free mods. It has Offroad Y pipe and straight piped (3" pipe) with stainless steel tips (expensive tips but they dont rust highly recommened )

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    Junior Member jz28's Avatar
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    02 camaro Z28

    Good Question. I'm Wondering The Same Thing. Are You Thinking Of Just Eliminating The Cats? Thats Wat I Want To Do I'm Currently Running A 3'' Y-Pipe With Slp Cat Back. I Was Told It Wasnt Recommended, It Would Just Create Turbulence In The Muffler. Not A Big Gain..

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    The Red Reaper 98Z28importslayer's Avatar
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    1998 Camaro Z28 T-Top A4

    yeah im wondering how much hp i would net from going with straight pipes which means no muffler and cat. with a offroad Y pipe. I have a cherry bomb custom system on there right now it sounds alright but i want a deeper tone and a few extra ponies. So im going to have my friend weld in a straight pipe where the muffler and cat. was. DO NOT go to a muffler shop just to do a straight pipe set up and i already had the muffler off they wanted to charge me $220 without tips. Also they cant touch the cat.

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    let the F-Bodies roll jimmybling31's Avatar
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    94 camaro z28

    Quote Originally Posted by 98Z28importslayer View Post
    yeah im wondering how much hp i would net from going with straight pipes which means no muffler and cat. with a offroad Y pipe. I have a cherry bomb custom system on there right now it sounds alright but i want a deeper tone and a few extra ponies. So im going to have my friend weld in a straight pipe where the muffler and cat. was. DO NOT go to a muffler shop just to do a straight pipe set up and i already had the muffler off they wanted to charge me $220 without tips. Also they cant touch the cat.
    I like my exhaust shop I go to. he is a hot rodder with multiple chevy performance cars from z06- ss's. he's pretty cool. he lets me work with him on my car. that's how I got mine set up the way it is. he just told me what to do with the ory on the welds to make it work right and that's it.

  5. #5
    15 sec. Oh yeah, its fast UTVols98's Avatar
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    $220 is actually pretty cheap.

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