Will I need two extra ECU pins or more or less? I'm doing the swap in about 2 hours as soon as my buddy gets here and I need to know if I need to go out and get some. Thanks again for your help.

Also, I have the FITV on the back of my intake mani. Now I've been reading that I have the choice of hooking it up or leaving it unpluged. If I leave it unplugged what will be the effect of it not being hooked up?

 

Automatics and Exceptions
On an automatic car (using an auto ECU), pin B11 is wired to your shifter position switch, D4. Since you won’t be moving that pin, you will need an extra ECU pin. If you're using the tried and true "cut" method, put the extra pin in B12. If you're using the "switch" method, put it in the C2 position. Other than this, the rest of your conversion should be exactly the same.

Some intake manifolds will have an FITV (fast idle thermo valve/idle up solenoid valve). If present, it should be located either on the backside of the intake plenum, or under the throttle body. It is up to you whether you want to wire this up or not. If you choose to, there is a slight difference in wiring. Pin B2 is wired to the FITV (if present). Since you won’t be moving that pin to the B10 position, you will need an extra ECU pin and wire to extend into the engine bay. You will also need a ground for the FITV. It uses the same ground as the EACV (black/yellow). Other than this, the rest of your conversion should be exactly the same.
http://fourthgenhatch.net/mpfi.html

 

whoever wrote that originally was confused. the fitv is always on the underside of the tb/im, and the iacv is always on the rear. the fitv does not have any wires going to it. there is a ficsv (fast idle control solenoid valve) however that allows extra air in at extremely cold ambient air temps, and if present is located on the back right corner of the intake manifold. it is controlled by the ecu.

 

copy and paste FTW