Exactly Ian. You put in a couple of parameters up front. Engine cu inches. fuel pressure, size of injectors, Idle speed. set throttle idle and wo throttle positon. of course with engine off. Start the car. Fired right up. Sounded as if the pistons were changing holes. With in 30 seconds it started to settle down to a nice idle. Let it run for 15 mins idling. then drive it. It stumbles and burps a couple of time but just keeps getting better and better.
about 300 miles and things have settle down perfectly.. Even bumps the throttle 300 rpms when you turn on the air.
The one thing you have to leary of is the 12 volt supply to the computer can't be cut off when in the key is in the start position. the key in the start position turns off 12 volt accessories. Solution was to put a push to start button
lg