Revhigh has worked together with HPSI Motorsports and Vaitrix Australia to unleash a series of tuning upgrades to suit mild to wild peformance. From stage 1 to stage 2 and beyond. Revhigh's pre-maps are the best dollar-per-horsepower modification one can make to the Holden engines. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through Revhigh’s optimization of the engine management system to take full advantage of the engine’s capabilities, with or without custom road, dyno or track tuning. The software loads to the factory ECU through, resulting in a clean and headache-free install.