2.85 upper, 3.09 diff, HHP email tune initial results

Discussion in 'SRT Hellcat Racing Forum' started by StellasHC, May 5, 2016.

  1. StellasHC

    StellasHC Platinum Member

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    Looking to improve on my 10.62 @ 130 "stock" time from last year, I added a 2.85 upper pulley, 3.09 differential, and an email tune from Josh at HHP over the winter.

    Josh sent me a base tune for MS109 fuel, that, in his own words, was "short on timing and a little rich"... I loaded the tune and headed to the track a couple weeks back... First pass on Hoosier 28/10/17 slicks resulted in this.....

    FB_IMG_1461437283596.jpg


    Josh has since looked at the log I sent him and sent me back a revised tune....and I'm heading out tonight looking for some 10.0s!!!

    Updates to follow!!
     
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  2. Never Satisfied

    Never Satisfied SRT Hellcat Supporter Gold Supporting Member

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    Wow, great improvement! I'm anxious to see your results.
     
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  3. pinetreecat

    pinetreecat Gold Member

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    Good luck stella!
     
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  4. Ray Hunsaker

    Ray Hunsaker Silver Member Hellcat Car Club Gold Supporting Member HCC Charter Member

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    ya buddy good luck make us proud !!!!!!
     
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  5. Cglhawk260

    Cglhawk260 Silver Member

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    Excellent results. Do you just have the upper pulley or lower pulley too?
     
  6. SRT MANG

    SRT MANG Silver Member

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    What wheels are you running? What about a new driveshaft?
     
  7. StellasHC

    StellasHC Platinum Member

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    2.85 upper and the pinned, stock lower...
     
  8. StellasHC

    StellasHC Platinum Member

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    Yes , aluminum driveshaft, which should go without saying...

    I use a Mustang FR500 17 x 9 wheel.
     
  9. owenspackman

    owenspackman BritishCat

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    great work my friend!
     
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  10. sublime6spd

    sublime6spd Gold Member

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    Awesome John, time to update your signature ;)
     
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  11. Mills

    Mills Silver Member

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    Wow - that is cooking man! These cars are absolute beasts. Looking forward to the updated results after Josh worked the tune a bit.

    What boost did you get?...curious if the MS109 is a track only deal and you load a 93 for normal non-track use?
     
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  12. TNCHARGER

    TNCHARGER SRT Hellcat Supporter Gold Supporting Member

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    Stellas could you type out your 60', ET and mph? I assume you posted a time slip but for some reason my computer is not displaying some pictures posted.....and are you saying you just replaced the lower pulley with OEM size or a smaller pulley?
     
  13. StellasHC

    StellasHC Platinum Member

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    1.48 60'
    10.201
    137.15

    Lower pulley is the factory piece that I pinned, sorry, should of been more clear
     
  14. StellasHC

    StellasHC Platinum Member

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    I see 14 psi on the factory gauge... you could run the MS109 full time if you wanted to, but at $15/gal it could get pricey....so, yes, I load a 93 tune for non track use
     
  15. TNCHARGER

    TNCHARGER SRT Hellcat Supporter Gold Supporting Member

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    No wonder everyone was wowing you...great run! Hope I can get close to that with the lower pulley and MS-109...
     

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