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RENNtech ECU Upgrade | Rolls Royce Dawn | 712HP/774LB-FT

RENNtech ECU Upgrade for Rolls Royce Dawn. Up to 712 HP / 774 LB-FT
Gains: +95HP & +90LB-FT
SKU: ECUBTL:54.F01.Dawn
Retail price without tax: $3,495.00

Our proprietary Rolls Royce ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units.

These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our tuning software and approach for the Rolls Royce Dawn is completely unique and independent from our Mercedes tuning program.

RENNtech tuning software for Rolls Royce offers significant gains in performance and throttle response without sacrificing your Dawn daily driver reliability. By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, increasing the engines rev limiter and modifying boost mapping for turbo charged vehicles, RENNtech performance software unleashes your Rolls Royces true potential.

When the RENNtech ECU Upgrade, the Rolls Royce gains up to +95 HP and +90 LB-FT.

Performance Numbers Overview 

Rolls Royce Dawn (MY2013+ | N74 | 6.5L V12 Twin Turbo) Stock Performance (at crank):

  • Rated by Rolls Royce (peak.):                        623 HP @ 5,600; 642 LB-FT @ 1,700-4,500rpm
  • Dyno measured by RENNtech (peak):               617 HP @ 5,400rpm; 684 LB-FT @ 3,900rpm


Rolls Royce Dawn (MY2013+ | N74 | 6.5L V12 Twin Turbo) Modified Performance (at crank):

  • Rated by RENNtech (peak @crank):              712 HP @ 5,100rpm; 774 LB-FT @ 3,800-4,600rpm
  • Rated by RENNtech (peak @wheel):              584 whp @ 5,100rpm; 635 wtq @ 3,800-4,600rpm
    • Crank Performance Numbers are calculated with a 18% Drivetrain loss.

For detailed explanation on crank HP, wheel HP, drivetrain loss, etc. please click here.


Dyno-Graph for Performance measured at the wheels:


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7825 SW Ellipse Way, Stuart, FL 34997
(+1) 561 - 845 7888
Mon - Fri 9am - 6pm


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