Trouble, dont you think if the manufacturer could adjust a wire voltage to gain 30 hp SAFELY they would do it by now? There is a reason you pay as much as you do for a fuel controller, it takes a lot of tuning and is a lot more complex than what you will get in this "box". Bought one as a joke for my truck once online that was $7 on ebay just to see how cheap it would be, was a plain resistor lol