I'd put it on first then plug it in.. LOL.

Just four little bolts holding it on.. doesn't hurt to do the throttle reset.. Key to on position (not start).. pedal to the floor for 5 seconds.. turn key off.. release pedal.. let it sit dormant for 2 minutes.

And as they say on Fox Sports Nascar day.. Crank IT Up.. LOL.

Note: (and your mechanic probably knows).. 3-4 little dots of silicone to hold the o ring gasket in position can go a long way..

Oh and your recent post.. your "chip" is a cable and software.. you hook your laptop up and basically download your stock file to computer.. email that to them.. they configure a tune and email it back. You then go back to the car and upload. DISCONNECT THE FAN (plug in connector right by the radiator and hose) when putting the new tune in.. otherwise get your headgear and wait for the 747 jet to pass.. LOL