In standard form the California T and 488 GTB produce 560 hp and 670 hp respectively but thanks to some clever tuning you can pump these figures up substantially. With the help of software, the EVOX ECO Performance upgrade will rise the California T up to 680 hp and the 488 GTB to a whopping 790 hp. What is different about this upgrade is all you have to part with is €3000 and you get the kit to do the upgrade yourself. Apparently it comes with very precise instructions to access the OBD2 port with a scanner so anyone with a bit of know how will be able to execute this upgrade.