Yes there's a fifth injector on the aftercooler as well as the wiring for it off the black box.

 

If you have a 04 and your kit is from a 04. All you need is that one black box. My kit didn't have the map thingy. lol! How much boost are you running?

 

Gettin it... I have a 01 but will be using everything that came with the 04 kit should be running at about 9 psi boost since its about 8 for the 04's

 

You should be ok with what you have. Stock map sensor are good for boost until 10 or 11 i think, cant remember. I just put my new pulley on and its a 12.5 psi pulley. Now i haven't gotten on it for that psi due too im waiting to get tuned. Plus im still on the black box. My car is a Ap2

 

Yea Imma have a shop install it. It's giving me a headache plus the car is my dd and I have to use a friends garage. Hopeful its not gonna cost a ARM and a leg all mounted and everything just needs to be installed. Hopefully by Thursday.

 

Ok good luck with everything.