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  1. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    I'm seeing 167g/s in those logs. What do we make of that? Ugh, I HATE this MAF scaling business. It's a constant frustration.
  2. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    Good grief; I'm sorry. I keep asking you this, don't I? Well, the airflows, then. Are they scaled? As in needing to have a 1.36 multiplier applied?
  3. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    Did you log 115-118-034? Can you do this?
  4. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    I really can't say one way or another. Have you logged it?
  5. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    I'd need to see logs and understand more about the car before I could say.
  6. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    BorgWarner never developed an efficiency map for this particular design -- or perhaps they did but it's filed away and not published. But I was able to extrapolate data from other designs to get a pretty fair estimate of its performance, allowing me to put together this efficiency chart...
  7. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    You're right. I messed up on the turbine rotor spec, giving you info for a 5303-120-5010. So...the 5304 part number calls for a 50/42 dimension, much better. I'd say this combo is good for 260bhp.
  8. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    Your compressor wheel is a 2077-series BorgWarner wheel with their ETT blade design. The turbine rotor is a common K03 type. Its dimensions are 45mm inducer and 38mm at the exducer.
  9. slappy_dunbar

    k03 imfo

    I'd agree. The control system on the -073 is identical to that on the -005. So the ecu will not have any difficulties reining it in when it wants. The bigger turbo is a newer design and will deliver the same performance with less work. I'd expect gas mileage to improve as well. And it's...
  10. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    That is fantastic wheel horsepower on injectors that size! You have this car thoroughly dialed in! :applaus:
  11. slappy_dunbar

    Quick turbo question

    An old, weak actuator salvaged off a K03 is not going to be up to the challenge of handling the boost pressures or hp quoted. And "guinea pig"? Hrmph. So where again is the data from the testing they've done? :unsure:
  12. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    docurley -- are you showing improved airflow numbers at the same psi? I should think the hybrid would do that for you. Not huge numbers, mind you. But I'd reckon perhaps you'd see 10-12 g/s of extra air with the new hardware. Have you got any logs?
  13. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    Just to be clear on the question: On the MAP-less engines such as AEB, when confronted with lowered airflow numbers the ECU will raise boost rather than lower fueling? This is what you've found?
  14. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    BUMP to resurrect the question above...
  15. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    Mark / Byzan I am still mulling over your "low budget tuning" modification you described some pages back. The thing I don't understand is how you can actually net more power from this alteration. The reason I'm puzzled is because I'd have thought the ECU, when "seeing" reduced airflow in...
  16. slappy_dunbar

    K03-73 (B6 190bhp) turbo upgrade

    You will see a nice improvement then. The -005 is god-awful tiny. The K03-073 shares its compressor wheel with the K04, so you should see a bit of a drop in combustion air temperatures. Your timing might improve as a result.
  17. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    I know a lot of things seem to be simply pointing to 300bhp, but the Mk1 FrankenTurbo shouldn't be capable of that. Really, neither will our upcoming replacement. Anyway, thanks for letting me pick your brains. When we come up with an explanation -- provided it's interesting -- I'll post...
  18. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    Understood. But then there's the fueling. We're showing 20+/ms injector duty cycles. Basically the 380s are being maxed. This is at 3bar. :unsure:
  19. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    I've thought about this. The tuner can answer this question, although in my recollection they said their software does not alter the data coming from the sensors. Exactly. Can't be sneaky like you've been. At least not on this particular car, :happy:
  20. slappy_dunbar

    TQS progress thread, From STD-Scroll-Eliminator.

    This turbo should put out ~200g/s. This is a Mk1 F4H-T, so it's using a compressor wheel that is smaller than a TT225/S3 wheel. The graph above is the actual numbers reported by the sensor to VAG-COM and secondarily shows my estimates using your 38% multiplier. Remember his car has a MAP...
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