TDO4 power is just amazing like! lol! gizzmo very easy to set up! button 1-boost button2-spool up time set the boost up in numbers at a time E.G set it to 10,let it flash to 0.00 take it for a spin see what you boosting pull over or dont boost it and gradually up the numbers so you get to what boost you are wanting. same with the spool up time take it for a spin and keep testing it number at time low to high i think mines on 48 I THINK! you can hold the buttons in to see what number you are at... also you have 4 settings but tbh i only you the 1 setting and i am running bang on 1 bar now enjoy PS the gauges look abit sqashed up in there wack them in the middle with some pods:)