Announcement

Collapse
No announcement yet.

S50 3.5 HFM Question

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    S50 3.5 HFM Question

    Ok...getting ready to install this S50 soon.I have a set of 21.5 lb injectors,but no 3.5/euro HFM yet!.

    Does the 3.5 HFM make that much of a difference in performance??

    tring to decide on which TRM chip to order.with or without the HFM,or just injectors/light flywheel.. i have a lead on a euro HFM!!
    NASA
    BMWCCA member
    PCA member 25yrs




    1991 318IS slick top
    1997 M3 sedan
    2001 325CI DD

    “whoever turns the wheel the least, wins"
    Tags: None
    #2
    Yes, it makes a noticeable difference. Don't skip it now.
    2006 GMC Sierra 2500HD 4WD LBZ/Allison
    2002 BMW M3 Alpinweiß/Black
    1999 323i GTS2 Alpinweiß
    1995 M3 Dakargelb/Black     - S50B32/S6S420G/3.91
    1990 325is Brilliantrot/Tan
    1989 M3 Alpinweiß/Black

    Hers: 1996 Porsche 911 Turbo Black/Black
    Hers: 1988 325iX Coupe Diamantschwartz/Black 5spd

    sigpic

    Comment

      #3
      hmm....i have to research the cost/benefits of this more. surely they are all items that can be added later right? I have yet to swap the s50 in, but haven't justified the upgrade yet until i get all the drivetrain parts sorted.
      Originally posted by FredK
      However, in your absence, I will likely sit in your seat buck naked while making racecar noises as if I were maxing your E30 out on the Mulsanne Straight while allowing the perforated vinyl to soak up my butt sweat (going 200 mph does that to you).

      My year in Germany
      Feedback

      Comment

        #4
        Just so you're aware, if you want to change your chip later there's usually no extra fee for that, just pay shipping both ways and whatever extra $ the upgrade would be.

        And PM me when you're ready to order so I can send you a coupon code. :)

        Comment

          #5
          ^^^ yea that another $50 huh! I will let you know Matt
          NASA
          BMWCCA member
          PCA member 25yrs




          1991 318IS slick top
          1997 M3 sedan
          2001 325CI DD

          “whoever turns the wheel the least, wins"

          Comment

            #6
            Does it really make that much of a difference though? I know that matt himself has said it makes a marginal difference. I have a 3.5HFM and I sent my chip to trm to get re-burnt for it but I'm just sayin...

            '89 Alpine S52 with goodies

            Comment

              #7
              can you tell the difference Adrian...looking for some numbers
              NASA
              BMWCCA member
              PCA member 25yrs




              1991 318IS slick top
              1997 M3 sedan
              2001 325CI DD

              “whoever turns the wheel the least, wins"

              Comment

                #8
                I have nothing to compare to my engine has had the 3.5 HFM on it since I first started it, my DME came with a chip for no HFM though.

                '89 Alpine S52 with goodies

                Comment

                  #9
                  I used both on my car, and they behave differently. I saw a bit more low-end with the 3", and more top end with the 3.5". It may have been a placebo effect, but throttle response was definitely better with the 3"
                  Check out Undr8d Empire on Facebook: www.facebook.com/Undr8dEmpireLlc

                  INSTAGRAM: @UNDR8D_EMPIRE
                  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.

                  Comment

                    #10
                    Originally posted by e30polak View Post
                    I used both on my car, and they behave differently. I saw a bit more low-end with the 3", and more top end with the 3.5". It may have been a placebo effect, but throttle response was definitely better with the 3"

                    Really? I thought it was supposed to get better with the 3.5" MAF.

                    '89 Alpine S52 with goodies

                    Comment

                      #11
                      I'm doin the 3.5" HFM upgrade now but I won't be able to tell a diff just from that. m50 is getting s50 cams, pink top injectors and TRM chip all at the same time.
                      sigpic

                      Comment

                      Previous template Next
                      Working...
                      X