I would definitely chip the truck again, they run so much better after there chipped, and by chipped I hope you mean tuner, like TS, F5, F6, Hydra. Theres a lot of different tuners out there so your best bet is to visit there websites and then call the ones you think your interested in and ask them about there tunes, they will be happy to tell you about them. To get you started there's: Beans, Swamps, DP, Powerhungry performance (php), Gearhead, and theres more i just cant remember all of them, heres a link to a bunch of write-ups:Chip comparison and discussion links. - PowerStrokeNation : Ford Powerstroke Diesel Forum
I personally went with Jonathon from Beans and absolutely love his tunes, completely woke my truck up, runs better, shifts better and egts are completely in check and couldnt have asked for better service. any one the tuners are great, it just really depends on whose tunes you feel more comfortable with and who you like working with, everybody has a different opinion on who they like, its just a personal preference. i hope thats good enough to get you started. if youd like more details on my tunes from beans feel free to PM me.