MY 2013 Roush Raptor 91 Dyno

Discussion in 'Ford Raptor Engine Discussion and Performance Mods' started by etuffgong, Mar 1, 2013.

Sponsored By: GotExhaust
  1. PropDr

    PropDr FRF Addict

    Posts:
    2,116
    Likes Received:
    1,113
    Joined:
    Nov 29, 2010
    Location:
    Eugene, Oregon
    Also, driveline loss is a given quantity that will not change with a change in input power.
     
  2. Bigg50

    Bigg50 FRF Addict

    Posts:
    1,611
    Likes Received:
    1,603
    Joined:
    Dec 19, 2012
    Location:
    Vallejo, CA
    It may be closer to 30%- mine put down 330whp with volant cai and Livernois tune. 20% right there, except for the fact that the flywheel hp has to be higher as well with those mods. So, it's my guess it could be closer to 30%. Unfortunately the truck was not dynode stock.

    To the op- The lower numbers you posted are the rwhp and the higher numbers are called flywheel hp. In other words your making more power at the flywheel and by the time you get to the rear wheels (rwhp) your making less power. RWHP is the number the truck is putting to the ground.

    True. Unless you get a lighter driveshaft, wheels, and or tires.
     
    Last edited: Mar 17, 2013
  3. etuffgong

    etuffgong Member

    Posts:
    33
    Likes Received:
    3
    Joined:
    Jan 9, 2013
    Location:
    San Diego

    I stand corrected.. my mistake... :doh2:


    The RWHP numbers are backwards. RWHP is 402, converted to 575 at flywheel. As far as the 20-30% torque/HP losses go, that would be erasing all safety codes to achieve max power. Good tuning is a balance between power and safety. If the engine detects stress or heat, it modifies the fuel mixture and timing. That is the 30 % loss. The engine backs off when it detects too much heat, boost etc. For 91 octane... I think these are pretty good numbers based on power and safety.
     
    Last edited: Mar 18, 2013
  4. 69Mach1

    69Mach1 Full Access Member

    Posts:
    952
    Likes Received:
    173
    Joined:
    Feb 13, 2012
    Location:
    South Jersey
    ...wow... :wtf: you really do not understand drivetrain loss do you? It has ZERO to do with Safety codes.. Might want to google it before you make your next post.
     
  5. Fred

    Fred FRF Supporting Member Supporting Member

    Posts:
    7,492
    Likes Received:
    2,186
    Joined:
    Sep 3, 2011
    Location:
    Richmond, VA
    Massaging the numbers...I hope I have a 50% loss...
     
  6. Sliver Raptor

    Sliver Raptor FRF Addict

    Posts:
    2,033
    Likes Received:
    884
    Joined:
    Mar 22, 2012
    Location:
    Charleston SC
    I always calc with 20% loss on these trucks but that is just me
     
  7. etuffgong

    etuffgong Member

    Posts:
    33
    Likes Received:
    3
    Joined:
    Jan 9, 2013
    Location:
    San Diego

    Wow Bud..
    I'm no expert like you are but i'm just trying to learn and share my experience
     
    Wilson likes this.
  8. 69Mach1

    69Mach1 Full Access Member

    Posts:
    952
    Likes Received:
    173
    Joined:
    Feb 13, 2012
    Location:
    South Jersey
    It was a bit harsh, I apologize.

    The trans, differentials, axles, etc are eating up power to get them moving.. During your dyno run the trans should of been in 4th and trq converter locked, so nothing the tuner did would change your DT losses from stock.

    Article on DT losses: Drivetrain Power Loss - The 15% "Rule"- Modified Magazine

    It appears you are putting down 70'ish more horsepower and 100 more lb ft of torque (at the wheels) then a stock Raptor.
     
  9. Wilson

    Wilson FRF Addict

    Age:
    44
    Posts:
    25,786
    Likes Received:
    9,802
    Joined:
    Jan 27, 2012
    Location:
    South Dakota
  10. SteVesTruck

    SteVesTruck Full Access Member

    Posts:
    80
    Likes Received:
    25
    Joined:
    Feb 20, 2013
    Location:
    Texas!
    Saving up for my Roush in a box upgrade.
     

Share This Page