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