ok here is what i got ....91 ef hatch it was a dpfi then i went to mpfi d15b moved the pins on the ecu i am rumning a 0bd0 pr3.... now the car starts up and runs fine but when it hits 5k rpm it brakes up.... now does it do that cuz i dont have vtec hooked up.... if so does anyone know how to wire obd0 vtec.....if yall want to u can text me at 352-257-0127