injector sizing question

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  • danval
    Advanced Member
    • Mar 2013
    • 191

    #1

    injector sizing question

    Quick question. What are the main symptoms of too big injectors on an overall stock motor? Well, thats besides the black smoke.. thanks
  • Navarone
    Banned
    • Jun 2014
    • 935

    #2
    Doesn't o2 sensor feedback adjust injector duration?

    Comment

    • MR 325
      Moderator
      • Oct 2003
      • 37828

      #3
      Why not just tell us what engine and injectors you're running?
      BimmerHeads
      Classic BMW Specialists
      Grover Beach, CA

      www.BimmerHeads.com

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      • DesertBMW
        E30 Enthusiast
        • Aug 2011
        • 1023

        #4
        Originally posted by danval
        Quick question. What are the main symptoms of too big injectors on an overall stock motor? Well, thats besides the black smoke.. thanks
        many bad things, too much fuel will wash the cylinders from oil lubrication and promote faster engine wear. Bigger injectors do not give more power. Injector size is matched to the air flow meter.

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        • mitchlevy7
          Mod Crazy
          • Aug 2011
          • 672

          #5
          running rich.....
          your injectors should match your tune.
          www.cp-e.com

          1989 Zinno 325i m52 turbo coupe
          2015 Ford Fiesta ST, Daily Driver.

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          • danval
            Advanced Member
            • Mar 2013
            • 191

            #6
            Sorry I didnt give more info. Its an m20b27 I head. I dont know what injectors are they. I believe they are light grey. Im actually waiting to do a turbo setup, thats why im not to concerned with changing them, but im trying to figure some stuff out. Thanks again

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            • AndrewBird
              The Mad Scientist
              • Oct 2003
              • 11897

              #7
              Stock M20 injectors are grey, but i and e injectors are different. What ECU are you using?

              Comment

              • nando
                Moderator
                • Nov 2003
                • 34827

                #8
                eta injectors are low impedance. if you used those with a B25 computer, it would fry the injector drivers.
                Build thread

                Bimmerlabs

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