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  1. #1
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    Removing all cats?

    Curious of the effects of removing front and rear cats? I understand removing the front cats will throw a cel, but anything else?
    Oh, before anyone freaks out about emission testing, I live in Arkansas, they don't test.

  2. #2
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    stinky exhaust comes to mind. many have removed the rear cats, im sure some have them all removed.
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  3. #3
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    More noise!
    TCE
    Your one stop...for Wilwood brakes.



    My Garage

  4. #4
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    More noise is kinda what I'm going for....haha

  5. #5
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    Removing all cats?

    I ran cat less for a year or so until I couldn't take the smell any longer..

    Your better off with electric cut outs for that occasional loudness. I just happen to have a set in stock I'll sell you.


    Sent from my iPhone using Tapatalk
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    Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.

  6. #6
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    Did it cause any issues besides a check engine light?
    Reason I'm asking is I had flowmaster super 10's installed, and I'd still quiet as a ***** cat at idle. Sounds more aggressive thru the rpms though.

  7. #7
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    Quote Originally Posted by dustybo83 View Post
    Did it cause any issues besides a check engine light?
    Reason I'm asking is I had flowmaster super 10's installed, and I'd still quiet as a ***** cat at idle. Sounds more aggressive thru the rpms though.
    It'll sound mean with no cats.. 😆
    04 twin turbo Marauder custom made by myself 😁
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  8. #8
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    Quote Originally Posted by dustybo83 View Post
    Did it cause any issues besides a check engine light?
    Reason I'm asking is I had flowmaster super 10's installed, and I'd still quiet as a ***** cat at idle. Sounds more aggressive thru the rpms though.


    Spark plug foulers in the bung then the o2's screwed into them and never a light.

    Only issue running open headers was blue flames at night every time I clutched running down the highway.


    Sent from my iPhone using Tapatalk
    SOLD 12/31/2021

    Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.

  9. #9
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    Quote Originally Posted by dustybo83 View Post
    Did it cause any issues besides a check engine light?
    Reason I'm asking is I had flowmaster super 10's installed, and I'd still quiet as a ***** cat at idle. Sounds more aggressive thru the rpms though.


    It's a 281 cubic inch motor, it's never gonna sound loud at idle, being stock. put some aero mufflers on..it will be loud and stupid obnoxious
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  10. #10
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    Quote Originally Posted by RubberCtyRauder View Post
    It's a 281 cubic inch motor, it's never gonna sound loud at idle, being stock. put some aero mufflers on..it will be loud and stupid obnoxious
    I don't see where cubic inches matter, and I've already put mufflers on it.

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  11. #11
    Quote Originally Posted by RubberCtyRauder View Post
    It's a 281 cubic inch motor, it's never gonna sound loud at idle, being stock. put some aero mufflers on..it will be loud and stupid obnoxious
    Aero mufflers FTW!

    2004 Silver Birch
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    Build date:9/29/2003, Adopted on 12/02/05
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  12. #12
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    Quote Originally Posted by RubberCtyRauder View Post
    It's a 281 cubic inch motor, it's never gonna sound loud at idle, being stock. put some aero mufflers on..it will be loud and stupid obnoxious
    Aeros with all 4 cats, stock res tips, and an otherwise stock car is surprisingly very quite.

  13. #13
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    Quote Originally Posted by dustybo83 View Post
    Did it cause any issues besides a check engine light?
    Reason I'm asking is I had flowmaster super 10's installed, and I'd still quiet as a ***** cat at idle. Sounds more aggressive thru the rpms though.
    Got a good sound clip of this?

  14. #14
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    If you were close to Springfield mo, I have a set of catless down pipes that would bolt right on. I tried them with my magnaflows and although they were probably the best sound ive had, they are way to loud. Funny i ran for a week and no smell was noticed. Id swap you if you wanted them. You are also welcome to try em on before you buy em!

  15. #15
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    Bob I was wondering about that smell.

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