This happened to me also! I had all the wiring correct, and was pissed, confused and frustrated for days on end! So I thought it was the wiring to the MAP, at first i made the mistake to take the green wire from the controller and hook it to green wire on the map sensor (as in i cut the orig wire and hooked it up wrong) after realizing i screwed up, i did it correct.
Put the hose on and went out and test drove....no red light, no leds lighten up, well i was pissed!
So i called Julio, did the voltage testing, and realized MY 3 BAR MAP SENSOR WAS BAD!!! What are the odds of that? Julio said that doesnt happen often, and that he'd send me a brand new one (which it was already) Got the new one, hooked it up, worked fine.
So do a voltage test, and see if the voltage rises or lowers with air applied to it, as in have someone blow/suck into the hose (i got my mom to be the sucker for that) If it does rise or lower, you got a bad 3 bar!
Hope everything works out fine,
Adam