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R1 Performance Package for Range Rover 5.0L V8 Supercharged

R1 Performance Package for the Range Rover V8 Supercharged 5.0L Engine comes with an ECU Upgrade and a Larger Crankshaft Pulley. The Maximum Performance Ouput is up to 558 HP + 571 TQ.
Gains: +50 HP / 110 LB-FT
Retail price without tax: $3,980.00

RENNtech has been at the forefront of ECU tuning since electronic engine management began to be utilized in vehicles during the mid-1980's. Our vast experience, countless hours of in house research, development, and exhaustive testing; ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability.

The combination of RENNtech's tuning software and proprietary Larger Crankshaft Pulley (designed and manufactured in the U.S.A.) offer significant gains in horsepower and torque across the Range Rover Supercharged 5.0L V8 Engine's entire power band. By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios, and increasing the engines rev limiter, RENNtech performance software unleashes your Range Rover's true potential.

With the R1 Performance Package, we upgrade the ECU's Software and upgrade the Crankshaft Pulley. The supercharger and it's pulley remain untouched and do not conflict future warranty issues. 

R1 Performance Package includes:

  • RENNtech ECU Upgrade
  • RENNtech Larger Crankshaft Pulley


Stock Performance Range Rover V8 Supercharged 5.0L:

  • 510 HP / 461 LB-FT @ 2,500-5,500rpm


Modified Performance Range Rover V8 Supercharged 5.0L:

  • 560 HP / 581 LB-FT



  • +50 HP / +120 LB-FT



Contact us

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


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7825 SW Ellipse Way - Stuart, FL 34997
TEL: 561.845.7888 FAX: 561.845.6777 E-MAIL: