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  1. #1
    BimmerJim
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    recent dyno numbers. (large pics, if they work?)

    looks like its time for a larger turbo. :(
    i tryed turning it up, and it would just spike 14, then settle down to 11.5,
    so, i turned it back down to 11-12 psi.

    so, i made 8 pulls on the new setup to get it tuned. but i was geting a
    horrible hickup in the power band at about 3500 rpm to 4500, im thinking
    its the ignition. because the motronic dosent have the afm or the wot
    switch, i dont think its advancing the ignition. alos, the dynos boost sensor
    cam loose at the end of that pull and started leaking. thats why the boost
    tapers off on the chart.

    also did a drivetrain loss pull also, my car has about 17.2 percent
    drivetrain loss.

    11.5psi, 106 octane.







    so, that equates to 283.0 flywheel hp, and 316.2 tq. :P
    hmm, thats 120 hp and 146 tq over stock
    last time i went to the track i was making 204 hp and i ran a 14.1 @ 98.6.


  2. #2
    matt325is
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    Re: recent dyno numbers. (large pics, if they work?)

    Very nice Jim, I'm glad you finally have it tuned, how does it feel on the streets? As for the WOT switch and AFM, I currently have no AFM hooked up, but I do have a WOT switch rigged up to the top of my TB. Maybe this is your problem? You wouldnt happen to know what the stock timing curve of the 325i is would you? I'm glad its finally somewhat done!

    Matt

  3. #3
    ///ARINUTS...
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    Which Engine? Which Turbo? What is your set-up?


  4. #4
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    Member No: 81246 X2theZ3 is an unknown quantity at this point X2theZ3's Avatar
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    14.1 with 204crank hp or wheel hp?


  5. #5
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    Member No: 94037 JoshQ is an unknown quantity at this point JoshQ's Avatar
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    Re: recent dyno numbers. (large pics, if they work?)

    I believe Ove over on www.bmwe30.net has a copy of the timing curve that he posted a while back. You might want to post there and ask him to repost it.
    -Josh

  6. #6
    BimmerJim
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    Re: recent dyno numbers. (large pics, if they work?)

    at the wheel. i ran my car at the track, i was disapointed so went to the dyno to tune. and my first pull made 204 wheel hp, but that was on my old setup. my first pull of the day on this setup was 228 wheel hp i think.

  7. #7
    BimmerJim
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    Re: Which Engine? Which Turbo? What is your set-up?

    sorry :)
    89 bmw 325i
    sotck bottom end, 169K mi.

    ENGINE STUFF:
    Turbonetics T3 .63 .60 turbo
    2.5" custom down pipe
    3" custom down pipe-back pipe
    Turbo manifold adapter
    Turbo XS RFL BOV
    Turbo XS manual boost controller
    Custom Front Mount Intercooler
    Port and Polished cylinder Head with a 3 angle grind
    Metric Blue grade 12.9 Head bolts
    9.3mm Plug wires
    Conical intake Filter
    Walboro 307 l/hr fuel pump
    48lb injectors

    mega squirt standalone fuel management


  8. #8
    BimmerJim
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    Re: recent dyno numbers. (large pics, if they work?)

    thanks!

    well, its not donew yet. my target boost is 14 psi, but i need a larger turbo first. shooting for 300 rwhp on the stock bottom end.

    see my most recent post for the awnser to that ;) im having traction problems in 2nd gear even with my 2.79 diff.

  9. #9
    BimmerJim
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    oh yeah. thats a 3rd gear pull

    i have a 2.79 diff, so 4th gear pulls take a decade. did that lst time i dyno'd and it took 32 seconds a pull to 158 mph in 4th. numbers would be slightly higher with a 4th gear pull.

  10. #10
    KevinR
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    Re: recent dyno numbers:

    Sounds sweet, very very sweet! What is your CR and what have you done to the bottom end? I'm kinda new to the forum so please check out my reply to 'Too many variables'. Keep up the good work. Kev

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