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  • Exhaust help

    I have been looking at others exhaust and I seen "optimize y-pipe" does this mean just hollowing out the cats?
    98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
    98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
    both T-RED/MNB

  • #2
    It involves taking a torch and cutting out some of the guts of the collector.
    2000 3.0 Roush Cougar
    2013 Focus ST
    2002 MINI Cooper S
    2008 Mustang Bullitt # 5389

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    • #3
      So in slow people terms hollowing the cats
      98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
      98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
      both T-RED/MNB

      Comment


      • #4
        No, not the same thing. Some people gut the precats in the exhaust manifolds. The y-pipe optimization is a little further down the exhaust system. 2 different modifications.
        2001 SVT Lightning #2839 - Stock

        2000 SVT Contour #1541 - | BAT | FSVT EAP | Hankook K110 | Y-pipe | RSTB | Energy Suspension |

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        • #5
          I haven't got under mine yet so there's 4 cats? Ok on the y-pipe thing I'm gonna need some more info on a how to. Please and thanks
          98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
          98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
          both T-RED/MNB

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          • #6
            only 3 cats, two manifolds and 1 after the y pipe, the one after that in the center of the car is a resonator, shop manual calls it the "center muffler"
            2000 CSVT, Black and Tan, #0801

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            • #7
              Ok so what do they mean by optimize y-pipe then? And the 2 manifold need the mil plugs? Right
              98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
              98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
              both T-RED/MNB

              Comment


              • #8
                Optimized Y-pipe is just as it sounds. The exhaust banks come together in a Y connection. The fork of the Y is quite pinched and restrictive. Two round pipes are pinched into D shapes to share the bolt flange that connects to the flex pipe. Doing the mod involves cutting out the pinched piping and putting in full diameter pipe. Use the search at the top of page with optimize should get the how to threads. If you don't want to try the mod there are aftermarket Y-pipes available too.
                Now driving around in ronssvt's old car Sold on 8/5/2014

                Now own a diesel Jeep Liberty for family trips and so daughter can borrow an automatic car.

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                • #9
                  Turn this
                  gallery_2786_24_32.jpg

                  Into this
                  2012-07-24_20-04-32&.jpg

                  By doing something Like this
                  2012-07-24_20-04-58&.jpg

                  = Optimized Ypipe
                  '01 F150 Supercrew-Magnaflow Exhaust, Airmax intake, 33" Terra grapplers
                  '98 Satin black CSVT #3107- Portmatched 3L, Quaife lsd and more SOLD 10/28/12
                  99 Tgreen/Tan CSVT Ported 3L, Koni/GC's, and more to come.

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                  • #10
                    Thanks solo I tired looking for it yesterday and found it on a different website but hell I'm not doing that I know for sure ill mess it up, I found a header and y-pipe for $350 that I'm gonna get. But thanks for your help
                    98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
                    98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
                    both T-RED/MNB

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                    • #11
                      If you're talking about the OBX stuff on eBay, keep in mind that the headers will need to be modified to work properly.
                      1998.5 3L SVT Contour #6183/6535 - For Sale/Trade

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                      • #12
                        Why? What's wrong with them?
                        98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
                        98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
                        both T-RED/MNB

                        Comment


                        • #13
                          Originally posted by 98csvt747 View Post
                          Why? What's wrong with them?
                          Aside from using thin low quality stainless steel (not all stainless is created equal) they are missing an o2 sensor bung.

                          Searching would brought you here:

                          http://www.contour.org/ceg-vb/showth...ing-an-o2-bung
                          1998.5 3L SVT Contour #6183/6535 - For Sale/Trade

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                          • #14
                            Ok so I'll use them with a tune or mils that's not a big deal. And anyone that can tig weld can put them on and missing a bung is nothing new, I don't plan on running cats any ways I live where we can pollute the air.
                            98 csvt 2.5 all stock with 237,xxx miles #747 (sold) 3-31-2013
                            98 csvt 3L ported with 117,xxx #895 (sold) 6-28-2013
                            both T-RED/MNB

                            Comment

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