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blow off valve

Scheduled Pinned Locked Moved Car Tech
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  • JimJ Offline
    JimJ Offline
    Jim
    wrote on last edited by
    #16

    Wait, The STi is so quiet you can never hear it... so that sound you think is your car... must be mine ahead of yours...

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    0
    • STiSchuckyS Offline
      STiSchuckyS Offline
      STiSchucky
      wrote on last edited by
      #17

      it is? when

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      0
      • treimcheT Offline
        treimcheT Offline
        treimche
        wrote on last edited by
        #18

        PLEASE don't EVER buy a TurboXS BOV. They are total garbage. Just stick with a Greddy, HKS, Tial or Blitz. If the sounds really matter that much, do a search on some of the DSM forums, someone had a page with a bunch of different sound files and vids of different BOV's.

        Troy
        2009 Yamaha R1
        2002 WRX
        2001 Toyota Tundra
        2001 Yamaha R6
        1988 Yamaha YSR 50
        2003 XR50

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        • JimJ Offline
          JimJ Offline
          Jim
          wrote on last edited by
          #19

          Yup. They are notorious for being shitty. Recommend: Greddy, HKS, Tial

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          • O Offline
            O Offline
            out there
            wrote on last edited by
            #20

            a bov (various names, diverter valve being one) is designed to relieve pressure between shifts or when the throttle is closed abruptly, thus saving excess wear on the throttle body and the turbo.
            they can affect preformance (positively or negatively) by either venting or recirculating. venting is releasing the pressurized air to the atmosphere, and recirculating pushes the air back in (generally) behind the mas (mass air sensor) to help keep the turbo from losing momentum between shifts.
            if you're really hung up on the sound of your bov, don't bother boosting your engine, you more than likely won't be able to hear much more than a pah (yes, pah with a very quiet "p") inside the car. in addition, if you just want to suprise people with a weird sound your car makes... pull it out of gear and then slam it back into gear without the touching the clutch or the gas pedal.

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            • ? This user is from outside of this forum
              ? This user is from outside of this forum
              Guest
              wrote on last edited by
              #21

              the txs bov is good IF you keep it clean and free from gunk.

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              • S Offline
                S Offline
                SleeperMx6
                wrote on last edited by
                #22

                treimche wrote:
                PLEASE don't EVER buy a TurboXS BOV. They are total garbage. Just stick with a Greddy, HKS, Tial or Blitz. If the sounds really matter that much, do a search on some of the DSM forums, someone had a page with a bunch of different sound files and vids of different BOV's.
                My buddiy had a Turbo XS BOV and he used it as a paperweight. POS.

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                • W Offline
                  W Offline
                  Wizard
                  wrote on last edited by
                  #23

                  I had a Turbo XS Type H on my car for about 15 minutes. Felt like ass and too freakin loud. Switched back to my 1g BOV and went much faster and sounded ok.

                  I have yet to buy anything other than a Tial or Greddy Type-S. The best sounding BOV for the least bucks is the good ol' 1g BOV. Crush it and do the complete mod from here:

                  http://www.thedodgegarage.com/turbo_bov_mod.html

                  Very nice, loud with hard IC and intake pipes. With T3/T4 turbos it sounds absolutley awsome. Only down-side to a 1g BOV is it's not for cars making over 500-550hp. The discharge is too small to prevent throttle body damage, compressor surge, etc.

                  Wiz

                  1992 GVR4 598/1000 Nile Black
                  1992 Tsi AWD
                  1982 Datsun KC 4x4
                  1990 Laser 2.0 AT NT
                  1994 ES 2.0L NT 5-spd

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                  • 24valvenotak2 Offline
                    24valvenotak2 Offline
                    24valvenotak
                    wrote on last edited by
                    #24

                    If you woulda raced me you could of heard a Blitz SS ; )

                    Getcher green hat, we are goin fishin.

                    > 63vette;288530 wrote:
                    > I dont know shit about building cars.

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                    • ? This user is from outside of this forum
                      ? This user is from outside of this forum
                      Guest
                      wrote on last edited by
                      #25

                      92BlackTT wrote:
                      If you woulda raced me you could of heard a Blitz SS ; )

                      hahahah your funny i will race u for shits and giggles NO money im to poor 🙂

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                      • stephen bradleyS Offline
                        stephen bradleyS Offline
                        stephen bradley
                        wrote on last edited by
                        #26

                        "Support bacteria. They're the only culture some people have."

                        • Unknown
                        1 Reply Last reply
                        0
                        • stephen bradleyS Offline
                          stephen bradleyS Offline
                          stephen bradley
                          wrote on last edited by
                          #27

                          personal favorite is the grddy type r, any of the turkey gobbler ones are pretty sweet also.

                          "Support bacteria. They're the only culture some people have."

                          • Unknown
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                          0
                          • AcesHighA Offline
                            AcesHighA Offline
                            AcesHigh
                            wrote on last edited by
                            #28

                            Any bypass valve that vents into the atmosphere will be loud. Most stock bypass valves vent back into the intake manifold and makes a kind of whoosing noise rather than the bus-like psst you get from the atmospheric BOV's. The purpose of a bypass valve is not to increase horsepower, but to save the life of a turbo. Keep in mind that if you vent into the atmosphere instead of back into the intake manifold you might encounter idling problems.

                            2005 Mercedes-Benz C240 4Matic
                            1993 Mazda Rx-7 Twin Turbo (sold)

                            legacy image

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                            • ? This user is from outside of this forum
                              ? This user is from outside of this forum
                              Guest
                              wrote on last edited by
                              #29

                              Quick question about aftermarket BOV's for you WRX owners out there...when your's vents, does it sound like it is mounted under the dash? I swear mine sounds like it's right behind the speedometer.

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                              • ? This user is from outside of this forum
                                ? This user is from outside of this forum
                                Guest
                                wrote on last edited by
                                #30

                                tjamz wrote:
                                Quick question about aftermarket BOV's for you WRX owners out there...when your's vents, does it sound like it is mounted under the dash? I swear mine sounds like it's right behind the speedometer.

                                yep sure does.

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                                • JimJ Offline
                                  JimJ Offline
                                  Jim
                                  wrote on last edited by
                                  #31

                                  Kirk wheres your opinion you post whore?

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                                  • ? This user is from outside of this forum
                                    ? This user is from outside of this forum
                                    Guest
                                    wrote on last edited by
                                    #32

                                    LOL. I can't talk though, I have 110 more posts than the next closest person (kirk excluded). And I didn't come on here until May/June...may I think

                                    fuck, nevermind....March

                                    I'm still second (I think) in posts per day @ 2.78

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                                    • ? This user is from outside of this forum
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                                      Guest
                                      wrote on last edited by
                                      #33
                                      This post is deleted!
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                                      • ? This user is from outside of this forum
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                                        Guest
                                        wrote on last edited by
                                        #34
                                        This post is deleted!
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                                        • JimJ Offline
                                          JimJ Offline
                                          Jim
                                          wrote on last edited by
                                          #35

                                          I'm the ultimate post whore... yes nick, I know you'll agree that 99.9 of the shit i post is dumb

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