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3" catback question

This is a discussion on 3" catback question within the External Engine forums, part of the LSx Technical Help Section category; Was wondering if any of you gentlemen/women could answer a quick question for me. I just picked up a 95 ...

  1. #1
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    3" catback question

    Was wondering if any of you gentlemen/women could answer a quick question for me.

    I just picked up a 95 T/A(yeah not LS1 but the answer and this question will still apply) Already on the car was a K&N FIPK and a Hypertech programmer.

    I did some research and decided to go with a catback as my first mod, I ordered a 3" Magnaflow.
    Now what I'm wonder about is that after further research that in true duals you don't need 3" until around 500 HP, 3" before that will actually hurt low end torque.

    Does this apply to a 3" catback as well or not since I still have the stock headers/y-pipe still.

    Basically if I'm wondering if I should go ahead and stick the magnaflow on or return it and go with a 2.5" system. thanks for the help!

  2. #2
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    Quote Originally Posted by Followthehollowx View Post
    Was wondering if any of you gentlemen/women could answer a quick question for me.

    I just picked up a 95 T/A(yeah not LS1 but the answer and this question will still apply) Already on the car was a K&N FIPK and a Hypertech programmer.

    I did some research and decided to go with a catback as my first mod, I ordered a 3" Magnaflow.
    Now what I'm wonder about is that after further research that in true duals you don't need 3" until around 500 HP, 3" before that will actually hurt low end torque.

    Does this apply to a 3" catback as well or not since I still have the stock headers/y-pipe still.

    Basically if I'm wondering if I should go ahead and stick the magnaflow on or return it and go with a 2.5" system. thanks for the help!
    your thinking is the opposite. a 3" will help improve TQ across the entire powerband. being that you also have an LT1 you already have some low end TQ grunt. 2.5" is good for mid to high-end. Stick w/the 3" system, you will be happy that you did, esp if you have any future mods planned.
    2000 SS - The Wicked Witch: °°Cammed 'n Slammed°° 458rwhp/410rwtq
    Quote Originally Posted by Bowtie_girl30
    I was hoping to just hump her up the exhaust cause she is so damn sexy....
    "Never argue with an idiot. They drag you down to their level, then beat you with experience."

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