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M20 Injectors - Why use m50?

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    #16
    Originally posted by MaksV View Post
    E30moneypit hit it right on the mark. The M20 runs at 3 bar and the M50 runs at 3.5bar. In reality I have had lots of good experiances running even 19# (~210cc) in a chipped and lightly modded M20. The 19# yellow units actually become 21.5# in a e36 (since it runs at 3.5bar) making them actually equivalent to the pink top S52 units.

    Generally going from a single hole to a 4 hole design is preferable for atomization. However having the correct size injector is much more important. This is why I recommend the M50 green tops for stock or basic M20s, and the 19# for modded cars.
    So I should go with the 19# Mustang Type II's then? Conforti chipped.

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      #17
      Originally posted by TrentW View Post
      So I should go with the 19# Mustang Type II's then? Conforti chipped.
      If all you have is a chip it can go either way. 19# type II or type III. If all you have is a chip you will be fine with the M50 injectors too. Pretty much up to you.

      Just shoot me a PM if you need a set.
      CHEAP REBUILT INJECTORS




      Need Quality Brakes? BimmerBrakes has it!
      For anything Else go with BluntTech!

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        #18
        I can vouch for MaksV

        He does very good work and is very honest/professional.
        I have a set of injectors from him in my car right now

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          #19
          Originally posted by Sagaris View Post
          So yes, as long as the flow rate of the injectors stays the same (or corresponding changes are made to the tune which shorten the injector pulse widths when running larger injectors) then fuel efficiency will increase with better atomization since you are able to do more work with the same amount of fuel. It mainly comes down to the driver being able to take advantage of this though.
          Thank you very much for your explanation. That was helpful. Again, not to hijack this thread but would swapping in the mentioned type III injectors into an ETA interfere with flow rate? Is this just a matter of plug and play or would any fine adjustments be needed? Any info appreciated!
          Newb to all the things.

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            #20
            Originally posted by Timp View Post
            Thank you very much for your explanation. That was helpful. Again, not to hijack this thread but would swapping in the mentioned type III injectors into an ETA interfere with flow rate? Is this just a matter of plug and play or would any fine adjustments be needed? Any info appreciated!
            There is a final matter to consider. The ETA run a low impedance system. The injectors I carry, and a lot of the "common" upgrades are designed for the more modern high impedance system. You cannot swap injectors across. Honestly for the ETA I either recommend a set of 19# type 3s to go with yuor 885 head swap (and all the "I" electronics that come with) - or a rebuild of the stock injectors. The ETA injectors actually flow pretty much the same as the M50 units.
            CHEAP REBUILT INJECTORS




            Need Quality Brakes? BimmerBrakes has it!
            For anything Else go with BluntTech!

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              #21
              Originally posted by MaksV View Post
              Honestly for the ETA I either recommend a set of 19# type 3s to go with yuor 885 head swap (and all the "I" electronics that come with) - or a rebuild of the stock injectors. The ETA injectors actually flow pretty much the same as the M50 units.
              What would you say if I wanted to take advantage of the 4-hole designs, but I'm running a stock ETA motor? If you sell anything that could work, let me know.
              Newb to all the things.

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                #22
                Originally posted by Timp View Post
                What would you say if I wanted to take advantage of the 4-hole designs, but I'm running a stock ETA motor? If you sell anything that could work, let me know.
                Well I will summarize here what i sent you via PM. The only upgrade I can think of is the injectors from certain early gen Porsches (944s I believe). They have 19# low impedance units inthe 4 cylinders.

                I strongly recommend a rebuild for a stock ETA. You are not going to find any more power there I am afraid.

                Maksim
                CHEAP REBUILT INJECTORS




                Need Quality Brakes? BimmerBrakes has it!
                For anything Else go with BluntTech!

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                  #23
                  Originally posted by MaksV View Post
                  Well I will summarize here what i sent you via PM. The only upgrade I can think of is the injectors from certain early gen Porsches (944s I believe). They have 19# low impedance units inthe 4 cylinders.

                  I strongly recommend a rebuild for a stock ETA. You are not going to find any more power there I am afraid.

                  Maksim

                  or rebuild stock units and use the 3.0 fpr off an I vs the 2.5 eta FPR ...voila you are close to 19# but do you have the need for it on an eta.....

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                    #24
                    Hey guys I gotta revive this old thread.

                    I've had a intermittent check engine light (lambda) for the last couple of years now and I'm at the point of replacing the injectors. I can see a small fuel leak coming from the number 3 injector and there is an obvious smell of gas. In addition I'm getting poor gas mileage (about 17 mpg mixed).

                    I having a hard time understanding the information here it seems as though people are suggestion the 19lb over the 17lb and then ive been told by others to just have the origonal injectors rebuild. I would really like to go to a 4 pintle type III my current injectors are crazy loud.

                    My car is basically stock
                    eBay long tube headers to catless 2.5in out to stock muffler exhaust is my only performance mod.

                    What I'm looking for.
                    1 - fix my check engine light
                    2 - regain some mpg
                    3 - fix gas smell
                    4 - quieter injectors

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                      #25
                      See here:

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                        #26
                        I bought and installed the M50 bosch injectors, 17lb, for my m20 (with chip) and feel it helped my performance and starts. One of the best upgrades I ever did.

                        This is where I got my rebuilt ones from.

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                          #27
                          Do I need to run a chip with m50 injectors? Or will I still see an mpg increase regardless ?

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                            #28
                            Originally posted by MaksV View Post
                            There is a final matter to consider. The ETA run a low impedance system. The injectors I carry, and a lot of the "common" upgrades are designed for the more modern high impedance system. You cannot swap injectors across. Honestly for the ETA I either recommend a set of 19# type 3s to go with yuor 885 head swap (and all the "I" electronics that come with) - or a rebuild of the stock injectors. The ETA injectors actually flow pretty much the same as the M50 units.
                            This seems like a very important piece of information. But when you say the ETA injectors flow generally the same, do you mean their numbers or their pattern?

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                              #29
                              So I want to purchase rebuilt injectors for my SuperEta with complete i head and internals.
                              What suits my engine the best?

                              Would that be what I need?

                              This item will fit on a 96 97 98 99 BMW M3 3.2L, 96 97 98 99 328IS 2.8L, 98 99 328I 2.8L, 97 98 528I 2.8L Set Of 6 GENUINE BOSCH Fuel Injectors. Warranty is issued with every set of remanufactured fuel injectors.
                              1990 kashmir beige BMW e30 327i
                              1993
                              muggello rot BMW e36 M3 Gruppe A Euro
                              1990 GP weiss Porsche 964 C2
                              1997 schwarz II BMW e36 328iS supercharged

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                                #30
                                Originally posted by FRODADDY View Post
                                So I want to purchase rebuilt injectors for my SuperEta with complete i head and internals.
                                What suits my engine the best?

                                Would that be what I need?

                                http://www.ebay.com/itm/1-YEAR-WARRA...2b9260&vxp=mtr
                                No those are far too big. They are 21lb.

                                You want the 17lb M50/S50 injectors.
                                BimmerHeads
                                Classic BMW Specialists
                                Santa Clarita, CA

                                www.BimmerHeads.com

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