Hello My name is Gregory .I am from Greece i am new in this forum. I have recantly build my bike to turbo.I use the proboost kit. Well the motor is stock 0.5 bar and made 242.50 rear wheel But i have problem after a good strong ride it loses water from water cooler... my mechanic says that is leaking from head casket. Anyway he suggested so to fix the problem i need to lower compression ratio because stock motor cant handle this pressure! So we need: cylinder bolt cylinder nut 2mm spacer under cylinder Cometic head gasket And because i will go up to 0.8-1.0 bar I also bought Fuel pump Bosch 0580314068 for 350ps & Gen II Hayabusa ECU Flashing Boost Control Kit. What is your ipinion about these? i need something more ? PS THe bike is for everyday use only! Not drag or anything else!. l want to make good strong rides without having problems!