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  • 3 inch I pipe

    Does anyone know where I can find a 3 inch Intermediate pipe? From cat to muffler without having to buy a whole new cat back.

  • #2
    Re: 3 inch I pipe

    stock z28

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    • #3
      Re: 3 inch I pipe

      Originally posted by Fondle View Post
      stock z28
      Pretty sure that's 2.75".

      3" I-pipe. http://www.summitracing.com/parts/WLK-54064/

      Summit also has a 3" over-axle too. Or you can get it all from Rock Auto for a little cheaper.
      '99 Camaro
      '04 Saab 9-3 Aero
      '90 Audi Coupe Quattro

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      • #4
        Re: 3 inch I pipe

        yea z28 is a 2.75. and it has those nasty ridgy bends in it.
        Thanks pace.

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        • #5
          Re: 3 inch I pipe

          Are there any other parts I need besides these two??
          http://www.summitracing.com/parts/WLK-54064/
          http://www.summitracing.com/parts/WLK-53303/

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          • #6
            Re: 3 inch I pipe

            For a full catback, you'll also want a bigger diameter S-pipe. Not many sell them, but you can get a U-bend pipe and cut it in half, turn one side, then weld. Here's an old but good thread about it. There are also a few good threads with more info and links, but you might have to search a little more for those.

            http://forum.camarov6.com/showthread.php?t=67580
            '99 Camaro
            '04 Saab 9-3 Aero
            '90 Audi Coupe Quattro

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            • #7
              Re: 3 inch I pipe

              jegs http://www.jegs.com/i/Dynomax/289/45593/10002/-1

              http://www.jegs.com/i/Dynomax/289/42273/10002/-1

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              • #8
                Re: 3 inch I pipe

                Originally posted by Fondle View Post
                stock z28
                SLP option camaros, with slp exhaust or 20tl will have 3" I-pipe.

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                • #9
                  Re: 3 inch I pipe

                  With the mods you have listed on your users page, a 2.5 I pipe will do just fine. The factory 2.25" pipe has an area of 3.97 square inches. A 2.5" pipe has an area of 4.90 sq in. The 2.5" pipe can flow nearly 25% more than the 2.25" pipe.

                  A small change in diameter is a big change in area. Going to a 3" pipe is not going to buy much if any more performance than a 2.5" for your mods.

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                  • #10
                    Re: 3 inch I pipe

                    Originally posted by pace2006 View Post
                    For a full catback, you'll also want a bigger diameter S-pipe. Not many sell them, but you can get a U-bend pipe and cut it in half, turn one side, then weld. Here's an old but good thread about it. There are also a few good threads with more info and links, but you might have to search a little more for those.

                    http://forum.camarov6.com/showthread.php?t=67580
                    i did this with my full 3" exhaust bc my borla catback didn't come with an s-pipe (after all that damn money :mad:). cut the U in half, flip it, and weld it --- turned out perfect.
                    pacesetters|full 3" borla exhaust|3" stainless e-cutout|slp cai & ram intake|c/f whisper lid|tbs|eibach|kyb|stb|sfc's|adj.lca's & phb|slp fan|b&m t5|180*|z06 17x9.5|8000k hids|hptuners|d/s rotors


                    sigpic
                    gone in body, but not in spirit

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                    • #11
                      Re: 3 inch I pipe

                      Thanks, ill probably start this when it gets a little warmer out. Hopefully go with a nice 3 inch cat too. Have any of you guys bought that magnaflow carsound of of GVperformance? I think its like $70. The guy at the perf shop said he would charge me like 300, so i figured id just do it myself cause im def not spending that much money for a high flow cat.

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                      • #12
                        Re: 3 inch I pipe

                        The Magnaflow cat is a popular choice for our cars. And at a good price too. I'd say go for it.
                        '99 Camaro
                        '04 Saab 9-3 Aero
                        '90 Audi Coupe Quattro

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                        • #13
                          Re: 3 inch I pipe

                          Yea, magnaflow probably has the best hi flow cat. The guy at your shop probably was thinking you wanted the direct repalcement kind, not universal.

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