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Speedtech EFR 7670 M235 does 556whp

Discussion in 'N55' started by doublespaces, Jun 12, 2018.

  1. doublespaces

    doublespaces Administrator

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    2009 E93 335i
  2. luchocamp

    luchocamp Private

    Messages:
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    f30 335ix / e90 335xi
    I think 22psi or something similar
     
  3. terryd5150

    terryd5150 Specialist

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    87
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    2008 E92 335i 2009 E90 335i
    That's lower than I would've thought, considering that's not a Mustang dyno....
     
  4. KevinC39

    KevinC39 Specialist

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    67
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    335i
    I'm kinda confused as well. Would like to see some more info. Speedtech made 620whp on 24psi through the stock air box, intercooler, and exhaust. So if Lucho is right then it does seem low to me.
     
  5. Jacques.delange

    Jacques.delange Lurker

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  6. doublespaces

    doublespaces Administrator

    Messages:
    5,835
    Location:
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    Didn't they say something about pushing that turbo to the limit though?
     
  7. terryd5150

    terryd5150 Specialist

    Messages:
    87
    Ride:
    2008 E92 335i 2009 E90 335i
    According to the data on Speedtech's website, they made 620 whp on the 7670 kit through the stock airbox, intake, intercooler, and exhaust (using PI, though) at 24 psi.

    I'm not certain I'd consider that pushing an EFR to the limit...?
     
  8. Twisted Tuning

    Twisted Tuning Lieutenant Vendor

    Messages:
    669
    The EFR7670 turbo is a 64lb/min turbo on its efficiency island which is about 650hp

    So they are not pushing that turbo at that power level.
     
  9. cloud9blue

    cloud9blue Corporal

    Messages:
    232
    Ride:
    09 E92 335i
    650hp at the crank, assuming no restriction in any other part of the setup. Granted, these dyno numbers are kind of useless without a log or baseline.

    I get about 450whp with efr7670 on pump at around 16 psi.
     
  10. terryd5150

    terryd5150 Specialist

    Messages:
    87
    Ride:
    2008 E92 335i 2009 E90 335i
    I guess I'm stuck on Speedtech's data showing 620 whp at 24 psi.
     
  11. cloud9blue

    cloud9blue Corporal

    Messages:
    232
    Ride:
    09 E92 335i
    24 psi on 3.0L engine revving to the redline is seriously overspinning these turbos...
     
  12. KevinC39

    KevinC39 Specialist

    Messages:
    67
    Ride:
    335i
    Was your 450whp on pump without port injection?
     
  13. terryd5150

    terryd5150 Specialist

    Messages:
    87
    Ride:
    2008 E92 335i 2009 E90 335i
    Not arguing, but I would have thought it to be slightly higher than that.
     
  14. cloud9blue

    cloud9blue Corporal

    Messages:
    232
    Ride:
    09 E92 335i
    Correct. Straight up pump 93, DI only.
     
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