Last nite I went to start my truck (04 F-150) let off the key too quick. Tried it again, sputtered and kinda backfired through my cold air intake. I went from 12.5 mpg to 16 mpg, very touchy throttle response like it should be on level 3 with edge evo. Lately, before last nite my truck has been running a little sluggish and idleing real low. Now it's idleing high and if it idles for a long time it starts running rough like it has a miss or something, but soon as you press accelerator right back to normal. Did the blowback through cai clean out maf or something? I'm a little stumped.

 

5.4 or 4.6????

 

clean your TB off

 

5.4 fx4

 

x2