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    Turbo spool/ no sound??

    So at the risk of coming off sounding dumb I have a question for the community....can you hear your turbo m20 spool? My m20 has a build head with turbo cam.....OBX adapter with full 3 inch exhaust. Turbo is a s256 and a 44mm waste gate. The car makes 14psi and is making the boost.....RUNS GREAT......but except I cannot hear turbo sounds??
    Is in the adapter masking sounds or something else???
    Any input is appreciated.

    #2
    Originally posted by Bme3092 View Post
    So at the risk of coming off sounding dumb I have a question for the community....can you hear your turbo m20 spool? My m20 has a build head with turbo cam.....OBX adapter with full 3 inch exhaust. Turbo is a s256 and a 44mm waste gate. The car makes 14psi and is making the boost.....RUNS GREAT......but except I cannot hear turbo sounds??

    Is in the adapter masking sounds or something else???

    Any input is appreciated.


    I can only speak of my experience with my new M3. After I changed the air intake, I could hear the turbo spool real good.

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      #3
      All I have there is a filter. Right off the turbo....my big single 335i with a filter I can hear much spools :)

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        #4
        My wrx with a stock intake spools louder then my m20 with the bw s256

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          #5
          That's strange, I'm also running an S256 and my spool is fairly audible. Is your exhaust loud and drowning out the spooling sound?
          2.7i Stroker Turbo Build Thread

          90 325i | 95 Miata

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            #6
            Take off the filter, drive with the hood popped - should be audible but I wouldn't worry much.

            1991 325iS turbo

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              #7
              I enjoy the sound of the twin gates open more the spool up anyway so it don't bother me [emoji1]

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                #8
                Originally posted by ak- View Post
                Take off the filter, drive with the hood popped - should be audible but I wouldn't worry much.
                Just drive with no hood!

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                  #9
                  My exhaust is pretty tame....was more curious than anything. I mean who doesn't want turbo noise lol

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                    #10
                    Taco man mine sounds nothing like that!
                    Car almost sounds stock. That sounds amazing

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                      #11
                      You're not going to hear much with that hood sound deadening, seal, and headlight cover. From what I remember your exhaust is pretty quiet so you're not drowning the intake noise out.

                      IG @turbovarg
                      '91 318is, M20 turbo
                      [CoTM: 4-18]
                      '94 525iT slicktop, M50B30 + S362SX-E, 600WHP DD or bust
                      - updated 1-26

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                        #12
                        Varg the exhaust is pretty quiet.

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                          #13
                          Damn, TacoMan... that sounds sweet!
                          Estoguy
                          1986 BMW 325, Alpenweiss ~ "Elsa"

                          Need a photographer, come visit my site: http://estoguy.wix.com/unique-perspectives

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                            #14
                            I can definitely hear my S257 over my loud exhaust and solid bushing noises. The HX35 was significantly more audible, but still I don't think you should have any problem hearing any turbo.
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                              #15
                              Originally posted by Northern View Post
                              I can definitely hear my S257 over my loud exhaust and solid bushing noises. The HX35 was significantly more audible, but still I don't think you should have any problem hearing any turbo.
                              How are to liking the s257? I was thinking about getting that one over the s256 but didn't for some reason.

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