I just changed my plugs. I put in autolite platniums.It looks like the truck still had the original chanpion plugs. With 53,000 on them i think it was time to change them. The truck seems to have a little more throttle response now. I will have to see about mpg increases. Im currently only averaging 11.4 mpg per tank. I dropped in a KN acouple of months ago and it didn't do squat for mpg.

 

do you have an 02 5.9 or 03 5.7 ?

 

A drop in K&N won't do anything except perhaps allow more fine dirt into your engine.

 

Ufortunatly I have the 5.9l. I'm kinda regretting that I didn't hold out and get the5.7l but i got a good deal on this one. The MPG realy sucks with the 360.

 

yea i hear what you mean... my old truck had a 318 and it was a 2wd 1500 now i got a 4x4 2500 and get the same mileage!!