Results 1 to 2 of 2

Cut the cat with stock exhaust?

This is a discussion on Cut the cat with stock exhaust? within the External Engine forums, part of the LSx Technical Help Section category; I've got a 95 formula with the lt1. All stock except for K&N. I like the sound now but I ...

  1. #1
    Junior Member
    Join Date
    Jun 2006

    1995 Formula

    Question Cut the cat with stock exhaust?

    I've got a 95 formula with the lt1. All stock except for K&N. I like the sound now but I would like a little more deep growl/rumble and more volume at wot. Will replaceing the cats with a straight section give me this? I don't have to pass any emmissions stuff where I'm at so that's no worry. I'd also like to know if there are any power gains? Prefferably Dyno proven because I've seen alot of people claiming HUGE SOTP gains and others saying no gains in power but in sound.
    Thanks, Beene

  2. #2
    Member silverTA2002's Avatar
    Join Date
    Sep 2005
    Bradenton, FL

    2002 Pontiac Trans Am

    Do a muffler first.

    It will sound better.

    Eliminating cats might gain you 2-5hp tops. When a car gets much louder, somehow it feels faster. It's all in your head. You'll never "feel" 5-10hp anyways.

    Getting rid of cats will make you louder, but along with the noise comes rasp and a bad exhaust smell.

    If you want really loud, for cheap, get an exhaust cutout. It'll be loud and raspy, but quiet when you want to.
    2002 Trans Am 6sp, SLP lid, Holley filter, Shaner S3 TB, Jet Hot long tubes and cats, FRA, HP tuners, Hotchkis STB and LCAs. TEA stage 1.5 5.3 heads, Comp 220/224 114 +2, UMI Boxed SFCs, Edelbrock PHR. Moser 9" 4.11 gears.

    **FOR SALE**:

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts