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  4. Turbo car. Cat or no cat.

Turbo car. Cat or no cat.

Scheduled Pinned Locked Moved Car Tech
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  • Sweet-WRX-LovinS Offline
    Sweet-WRX-LovinS Offline
    Sweet-WRX-Lovin
    wrote on last edited by
    #18

    dynotune wrote:
    depending on application you WILL NOT lose much power at all if you have a GOOD converter. I have made 600 plus to the wheels w/ them and alot of cars sound better with them in place. People that pick up horsepower w/ no converter is generally due to the cats being plugged. Good converters on a supercharged car will INCREASE the HP. I would advise him to leave the converter alone.

    There's the answer you were looking for. A really good high flow cat only becomes a significant restriction at ridiculous amounts of power and up. I grew up around the smell of unburnt gas so it's no cats for me. I love it. I said I love it.

    One time...

    1 Reply Last reply
    0
    • ? This user is from outside of this forum
      ? This user is from outside of this forum
      Guest
      wrote on last edited by
      #19

      Sweet-WRX-Lovin wrote:
      I love it. I said I love it.

      This moment brought to you by Mr. Bartz (only Harvey people will have any idea what I'm talking about):icon_rr:

      1 Reply Last reply
      0
      • ZeroZ Offline
        ZeroZ Offline
        Zero
        wrote on last edited by
        #20

        BAH! you might notice a slight difference without a cat. There aren't any tests, so you don;t have to worry about emissions. while you're at it, put a spark plug in the tail pipe.

        600 whp on a dynojet doesn't get my pants tight. 😉

        Chocolate Rain ;)

        MPI conquest

        1 Reply Last reply
        0
        • ? This user is from outside of this forum
          ? This user is from outside of this forum
          Guest
          wrote on last edited by
          #21

          Lose the cat., put in a test pipe. Chances are you'll melt the catalyst and end up with a plugged exhaust, if you're looking at a bigger turbo and most likely fueling adjustments.

          1 Reply Last reply
          0
          • ErikE Offline
            ErikE Offline
            Erik
            wrote on last edited by
            #22

            Cats are for Californians.

            They call me, old man...

            1 Reply Last reply
            0
            • 94NDTA9 Offline
              94NDTA9 Offline
              94NDTA
              wrote on last edited by
              #23

              He is shooting for the 425-450 whp mark. IT is allready really quiet for a 3 inch exhaust, I don't think it would be much louder without a cat.

              legacy image

              1 Reply Last reply
              0
              • PSiedTSiP Offline
                PSiedTSiP Offline
                PSiedTSi
                wrote on last edited by
                #24

                Pressbent?

                At first I did it for fun, then I realized I made the investment and had to do it!

                92 Talon AWD 6/4bolt [EMAIL="[email protected]"][email protected][/EMAIL]
                95 240SX SE SR20DET [EMAIL="[email protected]"][email protected][/EMAIL]
                1993.5 Supra Hardtop...Sold
                Next project? 6cyl, 6spd?

                > spanish-rice;237125 wrote:
                > at first i thought the title said beer truck drivers needed... In which case i accidently put my two weeks in at work.

                1 Reply Last reply
                0
                • 94NDTA9 Offline
                  94NDTA9 Offline
                  94NDTA
                  wrote on last edited by
                  #25

                  PSiedTSi wrote:
                  Pressbent?
                  What ever exhaust pro's is. I don't think it was mandrel, but it wasn't wrinkled.

                  legacy image

                  1 Reply Last reply
                  0
                  • PSiedTSiP Offline
                    PSiedTSiP Offline
                    PSiedTSi
                    wrote on last edited by
                    #26

                    94NDTA wrote:
                    What ever exhaust pro's is. I don't think it was mandrel, but it wasn't wrinkled.

                    So then it's technically 2.5'' since 3'' pressbent corners flow like 2.5''.

                    At first I did it for fun, then I realized I made the investment and had to do it!

                    92 Talon AWD 6/4bolt [EMAIL="[email protected]"][email protected][/EMAIL]
                    95 240SX SE SR20DET [EMAIL="[email protected]"][email protected][/EMAIL]
                    1993.5 Supra Hardtop...Sold
                    Next project? 6cyl, 6spd?

                    > spanish-rice;237125 wrote:
                    > at first i thought the title said beer truck drivers needed... In which case i accidently put my two weeks in at work.

                    1 Reply Last reply
                    0
                    • JoelJ Offline
                      JoelJ Offline
                      Joel
                      wrote on last edited by
                      #27

                      Exhaust pro's has a mandrel bender now...

                      no race car? becuz homeowner...

                      1 Reply Last reply
                      0
                      • 94NDTA9 Offline
                        94NDTA9 Offline
                        94NDTA
                        wrote on last edited by
                        #28

                        wannabe wrote:
                        Exhaust pro's has a mandrel bender now...
                        Yeah, it looked like it was mandrel bent, but I always thought SLS was the only mandrel bent shop in town, so I didn't even look that close at it.

                        legacy image

                        1 Reply Last reply
                        0
                        • JoelJ Offline
                          JoelJ Offline
                          Joel
                          wrote on last edited by
                          #29

                          press bent looks like a cambels soup can when its bent, all ripply and shit, mandrel looks like u would think a pipe bend should look, clean and somewhat uniform.

                          no race car? becuz homeowner...

                          1 Reply Last reply
                          0
                          • 94NDTA9 Offline
                            94NDTA9 Offline
                            94NDTA
                            wrote on last edited by
                            #30

                            wannabe wrote:
                            press bent looks like a cambels soup can when its bent, all ripply and shit, mandrel looks like u would think a pipe bend should look, clean and somewhat uniform.
                            Yeah, it was very nicely done. It was NOT pressbent then. He said it was ~$200 less than he got quoted at SLS, but he got a discount.

                            legacy image

                            1 Reply Last reply
                            0
                            • JoelJ Offline
                              JoelJ Offline
                              Joel
                              wrote on last edited by
                              #31

                              Well with an in house mandrel bender, you can move stuff quicker. But i guarentee that Nicks welds are better than the poop they do at exhaust pros. Spanish-Rice shoul dpost up a pic of his sweet downpipe they made him...

                              no race car? becuz homeowner...

                              1 Reply Last reply
                              0
                              • 94NDTA9 Offline
                                94NDTA9 Offline
                                94NDTA
                                wrote on last edited by
                                #32

                                wannabe wrote:
                                Well with an in house mandrel bender, you can move stuff quicker. But i guarentee that Nicks welds are better than the poop they do at exhaust pros. Spanish-Rice shoul dpost up a pic of his sweet downpipe they made him...
                                I wouldn't doubt it. He got what he paid for, but it was what he wanted.

                                legacy image

                                1 Reply Last reply
                                0
                                • MisterCMKM Offline
                                  MisterCMKM Offline
                                  MisterCMK
                                  wrote on last edited by
                                  #33

                                  PSiedTSi wrote:
                                  So then it's technically 2.5'' since 3'' pressbent corners flow like 2.5''.

                                  How would that be technically? Its 3" pipe. While the bends may slightly smaller the pipe is still 3"

                                  FASTER THAN DUBBSY

                                  > thrash;315544 wrote:
                                  > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                                  >
                                  > Ford is back :)

                                  1 Reply Last reply
                                  0
                                  • PSiedTSiP Offline
                                    PSiedTSiP Offline
                                    PSiedTSi
                                    wrote on last edited by
                                    #34

                                    MisterCMK wrote:
                                    How would that be technically? Its 3" pipe. While the bends may slightly smaller the pipe is still 3"

                                    Measure the inside diameter of a pressbent 3'' pipe. The flow is only as good as the smallest portion....

                                    At first I did it for fun, then I realized I made the investment and had to do it!

                                    92 Talon AWD 6/4bolt [EMAIL="[email protected]"][email protected][/EMAIL]
                                    95 240SX SE SR20DET [EMAIL="[email protected]"][email protected][/EMAIL]
                                    1993.5 Supra Hardtop...Sold
                                    Next project? 6cyl, 6spd?

                                    > spanish-rice;237125 wrote:
                                    > at first i thought the title said beer truck drivers needed... In which case i accidently put my two weeks in at work.

                                    1 Reply Last reply
                                    0
                                    • MisterCMKM Offline
                                      MisterCMKM Offline
                                      MisterCMK
                                      wrote on last edited by
                                      #35

                                      Yes, I know that, but its still just a 3" pipe

                                      FASTER THAN DUBBSY

                                      > thrash;315544 wrote:
                                      > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                                      >
                                      > Ford is back :)

                                      1 Reply Last reply
                                      0
                                      • PSiedTSiP Offline
                                        PSiedTSiP Offline
                                        PSiedTSi
                                        wrote on last edited by
                                        #36

                                        MisterCMK wrote:
                                        Yes, I know that, but its still just a 3" pipe

                                        No where did I say it wasn't 3''. I simply stated it was "technically 2.5''" since the 3'' pressbent flows like 2.5'' Mandrel. This is irrelevant because we already came to the conclusion it was mandrel bent, therefore it is full 3''.

                                        At first I did it for fun, then I realized I made the investment and had to do it!

                                        92 Talon AWD 6/4bolt [EMAIL="[email protected]"][email protected][/EMAIL]
                                        95 240SX SE SR20DET [EMAIL="[email protected]"][email protected][/EMAIL]
                                        1993.5 Supra Hardtop...Sold
                                        Next project? 6cyl, 6spd?

                                        > spanish-rice;237125 wrote:
                                        > at first i thought the title said beer truck drivers needed... In which case i accidently put my two weeks in at work.

                                        1 Reply Last reply
                                        0
                                        • MisterCMKM Offline
                                          MisterCMKM Offline
                                          MisterCMK
                                          wrote on last edited by
                                          #37

                                          PSiedTSi wrote:
                                          No where did I say it wasn't 3''. I simply stated it was "technically 2.5''" since the 3'' pressbent flows like 2.5'' Mandrel.

                                          The flow characteristics may be like 2.5" pipe when 3" is pressbent, but it is still 3" pipe so its not technically 2.5"

                                          FASTER THAN DUBBSY

                                          > thrash;315544 wrote:
                                          > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                                          >
                                          > Ford is back :)

                                          1 Reply Last reply
                                          0

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