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3.1L stroker w/ Dbilas

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    #31
    I mever heard of Dbilas, are they in the US?
    Engine bay looks sexy !

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      #32
      Three questions:

      1. Do you have flow numbers for your head?
      2. Did you consider ExtrudeHone rather than the ITBs?
      2. What's the diameter of each ITB?

      I'm curious, since my guess is that the throttle bodies will outflow the capability of the head by a wide margin, even with that nice cam and header combo.
      Garrick
      1989 325is
      DSP #72

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        #33
        Originally posted by CleanAzzE30z View Post
        Yeah thats what I had heard many times. Be nice to have some numbers.



        Mariano
        There was a guy in San Antonio who had the ITB setup. He was stationed in germany and got the thing from a junkyard for something unbelievably cheap ($50?). He had it on a stock m20 and that car made 155whp on the dyno. So almost no gains without tuning.

        '88 325is
        VP UT of Austin Autoholics
        BMWCCA 380364

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          #34
          Is there any way I can get a "Dbilias Organic" on the cover?

          Every day I wake up we drink a lot of coffee and watch the CNN
          Every day I wake up to a bowl of clover honey and let the locusts fly in.
          Lobsterbacks attack the town again
          Wrap all my things in aluminum
          Beams of darkness streak across the sky
          Pink rays from the ancient satellite
          Every time I look out my window same three dogs looking back at me.
          Every time I open my windows cranes fly in to terrorize me.

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            #35
            DOHC pwr teritory.

            Great #'s

            www.stancefactory.com

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              #36
              this is the exact build up i am getting ready to do. props man. is it alright if I PM with any issues I run into?

              Originally posted by Ryan...
              It now emits a beautiful blue-ish yellow/green smoke from the exhaust?? No idea what would cause that color, but I assume its good.

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                #37
                sexy looking m20.. rather do all that work to a dohc motor tho :P

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                  #38
                  Originally posted by E30 Racer View Post
                  2. What's the diameter of each ITB?
                  45 mm each.

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                    #39
                    Originally posted by Mot View Post
                    sexy looking m20.. rather do all that work to a dohc motor tho :P
                    X2

                    s50b32 ITBs look 10X betters.
                    Check out Undr8d Empire on Facebook: www.facebook.com/Undr8dEmpireLlc

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                    Scarlet V2 - #Project333Ti by @castromotorsport, @kingsautobodyshop, @bimmerheads, @hardmotorsport, @excel_motorsports & @mateomotorsports - http://www.r3vlimited.com/board/showthread.php?t=371356

                    Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

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                      #40
                      holy grail of m20 n/a tuning.
                      IG: @Baye30

                      FRONT VALENCE IS ZENDER!!! STOP FILLING MY PM BOX PPL!!!

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                        #41
                        Originally posted by golde30 View Post
                        holy grail of m20 n/a tuning.
                        +1
                        I love my dohc, but oldschool motors so much fun, makes you feel like the world is about to end when you get going...

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                          #42
                          it will interesting to see what the dbilas does for the topend

                          here is my 3.1L M20 with "standard cast manifold" and 283/273 catcam

                          works out to be 218rwhp/207rwtq on a dyno dynamics shootout dyno



                          and a S50B30 euro on the same dyno for comparison (red is stock, blue is with Autronic)

                          89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                          new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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                            #43
                            the SMT6 does have ignition control.
                            Gunni
                            @ Prodrive / Aston Martin Racing

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                              #44
                              Man, I would love to see a video of this!!
                              1990 Islandgrun 535iM Sedan
                              Euro lights + trim | Eibach/Bilstein | BBS RC090 17x8 | EAT Chip | Port + Polish | IE 284 Cam | Built valvetrain

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                                #45
                                Cheers Digger, that will be very helpful since i will be using a Dyno Dynamics here in the US. Those are great numbers and I'm really looking forward to getting mine on the dyno for the tune. On my last 3.0L stroker I used the Dastek dyno when the car was tuned with the Unichip piggyback so I guess it's a bit hard comparing numbers from different dyno's :( Calvin's was dyno'd on the same Dastek unit too.

                                The dbilas setup is not available in the US....it was once sold through BMP Design with their own name on it, but I don't think they carry it anymore. Anyhow, just check out their site at http://www.dbilas-dynamic.de

                                387 miles so far.............dammmmmnnnnn

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