Tow truck that needs alittle more kick..

[NYMustang50]

OK I dont know if I'm in the right section for this but if I'm not please any admin move it to its appropriate spot that would be great.. I got a 99 F550 with a build date of 11/98 it says on the door sticker so is it an early 99 or late?.?. But I do have two relays one for AIH and the GPR.. Its got the ZF6 manual transmission in it and its a pretty big truck since its a crew cab and with a 18 ft aluminum flat bed and wheel lift. Its got 170k miles on it and I'm looking for some things I should look into doing for it to help it run better at work. Would putting an DIY intake and muffler delete pipe and then considering getting a TW chip be a good idea? And of course I will be getting gauges as well. Just a boost and EGT. So I just want to get some inputs on if this would be a good idea to do and if or not my truck is a early or late 99

[chvyrkr]

I'm thinkin it's a TE444 and not a "PSD" if you've got an AIH in that model year. That build date PSD didn't have an AIH I don't think. Could be wrong, but I think that was a late 99 and later deal.

I don't know what the tuning differences in the International 444 was vs the 7.3 PSD. Same exact engine, but there were timing and injector differences at the very least. Still, I'm sure it can be tuned.