I'm thinking about getting a Diablo Sport programmer but i was wanting to see if anyone else has one on an 03' Gen. 5.4. And can you actually feel more power with a programmer or is it all just non noticable hp like other bolt- ons?

 

Do not buy a Diablo before checking to make sure they support your PCM. I was going to get one and started poking around on thier web site. After joining thier forum I started reading about 97-03 F150 owners having the tuner and it not working on thier trucks. Diablo keeps telling them the program update will come out on the next update and if you dig back in the forum history some people have been waiting for over a year.