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B20 injectors on B25

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    B20 injectors on B25

    I have a new set of white M20b20. Can i put them on M20b25 with no problems?

    #2
    what's the bosch p/n?
    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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      #3
      No to white on b25 . Those also are ran in the etas just look for blue 14.5 per hr i believe
      sigpic

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        #4
        What might happen if i do put em in?

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          #5
          Originally posted by digger View Post
          what's the bosch p/n?
          0280150716

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            #6
            those are low impedance injectors they may fry something electric. i would source a high impedance set
            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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              #7
              Originally posted by digger View Post
              those are low impedance injectors they may fry something electric. i would source a high impedance set
              How come!? Same set is installed in my 320i Bosch met. V1.3 for years with no problems.
              As per the pic below they are high impedance mine test 15-16 Ω.
              Attached Files
              Last edited by ADEN; 04-09-2021, 04:11 PM.

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                #8
                if they are low impedance then fine, when i searched somehow they appeared to be low impedance. can just measure rsistance across pin to confirm
                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

                Comment


                  #9
                  Originally posted by digger View Post
                  if they are low impedance then fine, when i searched somehow they appeared to be low impedance. can just measure rsistance across pin to confirm
                  I confirm they are 15-16 Ω but am i ok running them in b25 at 2.5bar regulator from b20?

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                    #10
                    116 g/min = ~116*60/1000*2.204 = 15 lb/hr
                    SQRT(2.5/3.0) = 0.91

                    so flow will be 0.91*15.3 = 14 lb/hr so its only 7% less than stock

                    should run ok with O2 sensor feedback with the ECU is functioning correctly and engine is stock, if you can get 3b regulator there will be less corrections going on wihtin the ECU.
                    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

                    Comment


                      #11
                      Originally posted by digger View Post
                      116 g/min = ~116*60/1000*2.204 = 15 lb/hr
                      SQRT(2.5/3.0) = 0.91

                      so flow will be 0.91*15.3 = 14 lb/hr so its only 7% less than stock

                      should run ok with O2 sensor feedback with the ECU is functioning correctly and engine is stock, if you can get 3b regulator there will be less corrections going on wihtin the ECU.
                      Thanks alot digger i guess i will just use them and see how it goes.

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