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  • high flow cat and piping...

    trying to decide what size cat and should i put new piping in from my cat to my cutout.... i was thinking about going 3inch but was told that may be too big. what do ya'll think?
    1999 Camaro Silver 5spd<br />Appearence Mods:<br />-Clear Corners -Tail Lights off a 93-96 Camaro -Painted Black Calipers w/ Silver Camaro Decal on front ones -Black Camaro Rear Fill Decal -Silver Camaro Front Fill Decal -Painted Silver Interior Pieces -RKSport Shift Knob<br />Performance Mods:<br />-Eibach springs -Whisper Lid -Removed MAF screen -Free Ram Air -Trans Am Dual Exhaust -3\" Cutout<br />Stereo System:<br />-Eclipse 8v Head Unit -Eclipse 87series 12\' Subs -Rockford Fosgate 800wt amp (subs) -MTX 225wt amp (highs)<p>AOL IM is jay eub, msn messenger is banks_2003@hotmail.com

  • #2
    3".

    I wouldn't even think about anything other than 3".
    Matt
    1998 Mystic Teal Camaro M5
    Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

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    • #3
      you sure that aint gonna slow my car down? i know my torque is prolly gonna drop off even more than it already did with the cutout
      1999 Camaro Silver 5spd<br />Appearence Mods:<br />-Clear Corners -Tail Lights off a 93-96 Camaro -Painted Black Calipers w/ Silver Camaro Decal on front ones -Black Camaro Rear Fill Decal -Silver Camaro Front Fill Decal -Painted Silver Interior Pieces -RKSport Shift Knob<br />Performance Mods:<br />-Eibach springs -Whisper Lid -Removed MAF screen -Free Ram Air -Trans Am Dual Exhaust -3\" Cutout<br />Stereo System:<br />-Eclipse 8v Head Unit -Eclipse 87series 12\' Subs -Rockford Fosgate 800wt amp (subs) -MTX 225wt amp (highs)<p>AOL IM is jay eub, msn messenger is banks_2003@hotmail.com

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      • #4
        Just moves the powerband a little higher. You won't loose any torque, it'll just raise it up a few hundred rpm. Lots of members here use 3" and love it.
        Matt
        1998 Mystic Teal Camaro M5
        Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

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        • #5
          The cat I just did worked great with a 3 in 3 out due to thats what the stock cat takes... Just depended on where you cut it.
          1996 Silver camaro Z28. M6,<br />12 bolt, 4.11\'s, posi, Rear cover, Spec stage 2, loudmouth, more <a href=\"http://home.mainstreamtopics.com/?index=3&module=1\" target=\"_blank\">http://home.mainstreamtopics.com/?index=3&module=1</a> &lt;Mods, Pics & more <a href=\"http://home.mainstreamtopics.com/?index=3&module=2\" target=\"_blank\">http://home.mainstreamtopics.com/?index=3&module=2</a> &lt;Fbody Tech Articals

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          • #6
            Hi flow cats suck, I haven't even had mine for 1,000 miles and it's f***in blown already, rattles like a beast and I can feel the stuff moving around inside. Gutting it asap...
            \'99 SSM Camaro V6 M5<br />(mod list on cardomain site; too long to list here)<br /> <a href=\"http://www.cardomain.com/id/v6cam99\" target=\"_blank\">http://www.cardomain.com/id/v6cam99</a>

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            • #7
              99v6cam..... where did you buy yours from/what brand name?
              1999 Camaro Silver 5spd<br />Appearence Mods:<br />-Clear Corners -Tail Lights off a 93-96 Camaro -Painted Black Calipers w/ Silver Camaro Decal on front ones -Black Camaro Rear Fill Decal -Silver Camaro Front Fill Decal -Painted Silver Interior Pieces -RKSport Shift Knob<br />Performance Mods:<br />-Eibach springs -Whisper Lid -Removed MAF screen -Free Ram Air -Trans Am Dual Exhaust -3\" Cutout<br />Stereo System:<br />-Eclipse 8v Head Unit -Eclipse 87series 12\' Subs -Rockford Fosgate 800wt amp (subs) -MTX 225wt amp (highs)<p>AOL IM is jay eub, msn messenger is banks_2003@hotmail.com

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              • #8
                you might have an engine problem that is causing it to come apart.
                1996 Silver camaro Z28. M6,<br />12 bolt, 4.11\'s, posi, Rear cover, Spec stage 2, loudmouth, more <a href=\"http://home.mainstreamtopics.com/?index=3&module=1\" target=\"_blank\">http://home.mainstreamtopics.com/?index=3&module=1</a> &lt;Mods, Pics & more <a href=\"http://home.mainstreamtopics.com/?index=3&module=2\" target=\"_blank\">http://home.mainstreamtopics.com/?index=3&module=2</a> &lt;Fbody Tech Articals

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                • #9
                  Magnaflow from one of thier dealers (don't remember exactly which one). The warrenty is void with aftermarket exhaust too. :pissed:
                  \'99 SSM Camaro V6 M5<br />(mod list on cardomain site; too long to list here)<br /> <a href=\"http://www.cardomain.com/id/v6cam99\" target=\"_blank\">http://www.cardomain.com/id/v6cam99</a>

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                  • #10
                    Banks 03 where did they put your cutout? i just had pacesetter headers and a random technology high flow cat put on with a magnaflow exhaust. the mechanic said there was no room for the cutout? :mad: Now that i have the whole exhaust done is it gonna be a pain to get this cutout on?

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                    • #11
                      Catco 3 inch high flow here.... $47 from summit racing :D
                      Race car - gone but not forgotten - 1997 firebird V6
                      nitrous et & mph: 12.168 & 110.95 mph, n/a 13.746 & 96.38 mph
                      2013 Dodge Challenger SRT8: 12.125, 116.45
                      2010 Ford Taurus SHO: no times yet

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                      • #12
                        mine was installed after the Cat and S-pipe... about a foot or so before the rear axle.
                        1999 Camaro Silver 5spd<br />Appearence Mods:<br />-Clear Corners -Tail Lights off a 93-96 Camaro -Painted Black Calipers w/ Silver Camaro Decal on front ones -Black Camaro Rear Fill Decal -Silver Camaro Front Fill Decal -Painted Silver Interior Pieces -RKSport Shift Knob<br />Performance Mods:<br />-Eibach springs -Whisper Lid -Removed MAF screen -Free Ram Air -Trans Am Dual Exhaust -3\" Cutout<br />Stereo System:<br />-Eclipse 8v Head Unit -Eclipse 87series 12\' Subs -Rockford Fosgate 800wt amp (subs) -MTX 225wt amp (highs)<p>AOL IM is jay eub, msn messenger is banks_2003@hotmail.com

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                        • #13
                          yeah i'm thinking of putting catco also on my, so i can stop hearing that damn rattle.
                          -Paul-<br /><br />03 Lancer Evolution VIII<br /><br />1998 Camaro M5 - Traded

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                          • #14
                            birdonfire, go to another mechanic. hes stupid.
                            banks_2003, 3" piping and cat. and cutout [img]smile.gif[/img]
                            2000 3.8 A4 Pewter Camaro

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                            • #15
                              Wussup guys, I have a 2.5" catco high flow cat in my car with 2.5" piping. But I want to change my piping to 3". A muffler shop here said they can weld the 3" pipes to my 2.5" cat.

                              What do you guys think? Will it work? Will it make a huge difference in sound if I replaced my cat with 3" or basically sound the same with my 2.5" cat.
                              <a href=\"http://www.dontforgettotakeyourvitamins.com\" target=\"_blank\">www.dontforgettotakeyourvitamins .com</a>

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