i really want to get my truck running as soon as possible so i read alot of forums about vats bypass modules and was just wondering if they work and witch one is a better one to get. another question is i found two types one that is fed from a 5 volt supply and another that is a 12v supply not sure if this matters but its probly good to know also do i need 30 hertz or 50 hertz. any help would be useful thanks.