it is deff not a real fun task with the engine in the car.
basically, you will need to at least take the throttle body off, and it makes it easier it take the plenum off the runners.
if you have any experience working on cars you should be able to easily accomplish the task if you keep a cool head and take your time.
also, if you didnt know, the ecu is above the glove box, so take the glove box out and disconnect the three plugs to the ecu and the 2 plugs to the dash wiring then pull the engine harness thru the firewall.
i just pulled a harness off an engine outside the car last night and remembered how fun it was doing it in the car!
Adam