i had to install one in my car two weeks ago. it's real easy. take out the side panels. (one near the gas pedal and then on the opposite side.) then on the right hand side unscrew the plug that connects the wires to the ecu. next look toward the inside of the panels/bottom left and right side corner and you should see two screws on each corner of the ecu. not the screws holding the ecu holder to the ecu but near the black plastic tubing. you'll see what i'm talking about. unscrew both, then pretty much all you have to do is pull the ecu away from the firewall (down toward the shifter) and slide out. it's easier to slide it out from the right side since the gas pedal is on the left. thats it. if you got any more questions, email me.