i am running an lrp a.i esc and a lrp fusion phase 4.1 10 turn i was runing for about 20 secs then the car goes as if the battery is extreemly flat like 2 km/h.?????? please help i need my rc for tomorrow!!!!!

sorry i plugged my blue wire into my yellow brushless motor wire what is that wire for anyway?? does a brushless motor require more current? for a 3rd wire?

A brushless motor has 3 seperate coils, in the can, and the permanent magnets are in the rotor. Those 3 wires are used to send power to 3 seperate coils, typically in a wye (Y) or delta configuration... if your car seems to be going backwards when it should be going forwards, you can swap any two of those wires and the direction should change.

Oh and for sensored brushless like with LRP / novak systems, the color must (or should) be matched, otherwise it will get kinda confused like yours just did.