1st Gen R53 Cooper S Mileage change after a pulley mod

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by west7, Sep 16, 2012.

  1. west7

    west7 Member

    Sep 17, 2011
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    For all of those whom have preformed the 15% pulley reduction mod, how has your mileage resulted? Did it increase or decrease or remain the same?
     
  2. Crashton

    Crashton Club Coordinator

    Jun 4, 2009
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    For me it decreased a bit at first. I think that is because I had to keep using that new found power. Once used to the power I'd say it is roughly the same. My highway mpg is 30-31 around town I see 26mpg.

    I am running a 15% pulley....
     
  3. davavd

    davavd Club Coordinator

    May 7, 2009
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    I didn't notice much of a change either. I get 24-26 mpg. Most of my driving is to and from work, a 26 mile trip, of which 20 is interstate.
     
  4. Way Motor Works

    Way Motor Works New Member

    May 4, 2009
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    We find customers usually get about the same mileage. A few that drive like grandma all the time actually saw a slight increase in mileage.
     
  5. west7

    west7 Member

    Sep 17, 2011
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    Wow. Thanks guys. Sounds like a solid mod then.
     
  6. Crashton

    Crashton Club Coordinator

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    Best bang for the buck mod on an R53 there is. :D
     
  7. Dave.0

    Dave.0 Helix & RMW Powered
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    Mine decreased because I have more power and much more FUN.
    :Thumbsup::devil::lol:
     
  8. Nathan

    Nathan Founder

    Mar 30, 2009
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    I have the same problem.

    Now if only I could keep my foot out of it, then I'd better mileage. But we know thats not gonna happen.
     
  9. Dave.0

    Dave.0 Helix & RMW Powered
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    I get the best mileage when my car is sitting in the garage because as soon and I take it out and go hammer it I average about 13-19 MPG.
     
  10. Crashton

    Crashton Club Coordinator

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    On track my mileage gets very low, but on the road while behaving myself 26mpg - 31mpg is pretty good for my little fun wagon. :D
     
  11. Nathan

    Nathan Founder

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    I've stopped checking, it's not going to make a change in my style so I don't bother anymore.
     
  12. Crashton

    Crashton Club Coordinator

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    I think your big injectors & tune have more to do with your mileage or lack of same than the pulley does. Then there is that size 12 throttle foot. :wink:
     
  13. west7

    west7 Member

    Sep 17, 2011
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    Where does the power and move to? How much lower is the rpm at which you can feel the sc really kicking in?
     
  14. Rocco8788

    Rocco8788 New Member

    Feb 19, 2012
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    What is the # on the spark plugs you guys recomend when doing this mod.? I have heard that dropping the temp range will make a few more little winnies out of it. Also it is time for a tune up since I have hit 105k and I was wondering what wires and coil ppl have used and what works well?
     
  15. BlwnAway

    BlwnAway Well-Known Member

    Nov 24, 2011
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    Wires, take your pick.
    Coil, stock. (if yours is working fine, don't worry about it.)
    Plugs, 1 step colder than stock. (NGK's are BKR7EIX)
     
  16. Way Motor Works

    Way Motor Works New Member

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    I'd recommend the JCW spark plugs as they are the most reliable and fit right.
     
  17. Crashton

    Crashton Club Coordinator

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    #17 Crashton, Nov 30, 2012
    Last edited: Nov 30, 2012
    All one needs to do is head to the local parts house & buy the correct NGK. You'll save yourself some bucks.
     

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