I was playing around with my F150 and decided to block off the signal to the MAP sensor...when I revved it up she spit gasoline out the tail pipe and idled like crap...Then I remembered someone here saying that more diesel=more power. A little light bulb went on. So I pulled the MAP out of my dis-assembled Bronco and I blocked the nipple on it and re-installed the vacuum line over it. Fired it up, warmed it up then took it for a burn. There is a noticeable increase in power, I get a little puff of black coming out of a gear change now. Coming into second if I get on it about 3/4 throttle or more I leave big black tire marks on the asphalt.
But what I want to know from you guys is, am I going to wreck something if I keep running it like this?

 

shouldnt hurt anything. the map just tells the pcm how much psi you got and to defuel.

 

sweet Everything seemed fine, well actually seemed even better . I cant believe the difference it made. Next time I fuel up Im going to watch to see if It changed mileage any. Probably decreased it a bit more, the way I drive haha.
...and thanks for the link to the AIC manual

 

No Problem

 

well I figure I should post my new experience with this. After I posted last I went and fixed my jimmy riggin to the MAP sensor. When I first did it, I used the MAP off my bronco and it was all just kind of hanging there. So I went to go re-install my alteration more permanently to the F350 MAP. Well I had the hose completely disconnected from the sensor and they were both blocked totally. It ran like crap when I went to take it out again. Ticked off, thinking I wrecked something I put it all back to the way I had it, using the bronco MAP. Here is what I did:

I took a Q-tip and cut one fuzzy end off, then rammed a toothpick (round, 2 pointy end ones) up the shaft of the Q-tip as far as I could with just my hands, then cut off the excess toothpick. Next I put that end into the MAP (fuzzy end out) and cut off the excess Q-tip, leaving about 1/8" out so I could grab it to remove it. I then pulled it out and wrapped a little bit of electrical tape around it, so it would pressure fit into the inside of the MAP sensor vacuum port. Then I put the vacuum hose back onto the port on the MAP, and plugged it back in...and shes running the way I had it the first time.

Just incase someone does it and wonders why the hell they lost power and I gained power. I dont know why it works so well the way I did it with the Q-tip and not when I had them totally seperated and blocked off.

BTW I am using the Bronco MAP, I dont know if there is any difference between the to other than I know for a fact from this that the F350 MAP has a larger ID on the vacuum port than the Bronco one does. [/Ghetto Fab]