Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: 230+whp on Stock JCW Head

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  1. Dave.0

    Dave.0 Helix & RMW Powered
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    #36 Dave.0, Apr 2, 2012
    To the OP nice numbers, enjoy the FUN ride.

    FYI I also have an RMW car, built by Eric at Helix, tuned by Jan and I have 255 whp on the Helix Mustang Dyno.

    4 years old with no issues except I need more Gas, Meth and Tires.
     
  2. jiminni

    jiminni Well-Known Member

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    #41 jiminni, Apr 2, 2012
    Last edited: Apr 2, 2012
    :confused5: How did I nit pick? I asked a question. :(
     
  3. jiminni

    jiminni Well-Known Member

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    #42 jiminni, Apr 2, 2012
    Stock GP is what, 190 WHP? You added a cam, header and tune and now you are at 230 WHP. That equals a gain of 41 WHP correct?
     
  4. ThumperMCS

    ThumperMCS New Member

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    #44 ThumperMCS, Apr 2, 2012
    I thought we established that my GP was no where near what a normal GP was like power wise?

    My guess is it was 200ish. My first R53 was 204 and it felt very similar.
     
  5. jiminni

    jiminni Well-Known Member

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    #45 jiminni, Apr 2, 2012
    Sorry missed that :cool: So it made 31 WHP?
     
  6. gp89

    gp89 New Member

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    #46 gp89, Apr 3, 2012
    I'll give him a call! Thanks so much! How is the reliability of the stock head with those larger HP numbers?
     
  7. minimark

    minimark Well-Known Member

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    #47 minimark, Apr 3, 2012
    Very good!
     
  8. Mr. Jim

    Mr. Jim Mudshark
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    #48 Mr. Jim, Apr 3, 2012
    Thank you!

    As soon as RMW or Mynes is mentioned you know some butt-hole is going to chime in with his two cents.... Something for which I do not look forward to at all... Just sayin......
     
  9. davisflyer

    davisflyer New Member

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    #50 davisflyer, May 24, 2012

    My numbers are similar on my 2006 JCW. 223 whp and 200 wtq with stock JCW head and injectors and just a street cam, header and dyno tune. As to the reliability, 4 years on the cam and header and 3 years with the tune. NO issues!

    Good stuff!!

    [​IMG]
     
  10. WolfGTI

    WolfGTI Active Member

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    #51 WolfGTI, May 24, 2012
    Considering my car has 144,000 and out of that total about 50,000 has been with the tune, pulley etc... I'd say the stock head deals with those numbers just fine.

     
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