Taking into consideration the differences on the early 99 ie smaller injectors, smaller turbo to mention a few, Is there less benifit to using a tuner?

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Early 99 has a wicked wheel in it from the factory.

The early99 has 130cc(AB code) injectors and the late99-03 has 140cc(AD code) injectors.

The early99 has 2" intake runners. The late99-03 has 3" intake runners.

The early99 has a 15* swash plate HPOP. The late99-03 has a 17* swash plate HPOP.

The early99 has one glow plug relay. The late99-03 has one glow plug relay and one air intake heater relay side by side. Both relays are on the passenger side valve cover toward the front of the truck.

The early99 has a totally different air filter that is not inter changeable with the late99-03. But you can put the late99 air cleaner assembly in the early99 truck. The only two aftermarket air filters that work on the early99 are the AFE stage 2 and the AIS.

The early99 track rod has smaller mounting bolts than the late99-03. Stock rod replacement bushings, Prothane bushing part # is 61217BL.

The early99 has shallower rotors than the late99-03.

The early99 has shorter hub-bearings than the late99-03.

The early99 front axle U bolts are square where they go over the spring pack. The late99 U bolts are round.

The early99 has a different pitman arm than the late99-03.

The early99 does not have the AIH like the late99-03.

The early99 does not have the automatic transmission fluid cooler in the radiator.

The early99 has no indicator light showing that "cruise" is on. Late99-03 has a cruise light that will come on when you set the cruise control. Some of the early99 truck have this light in the dash already. A newer PCM(Yes it will plug in and will run better too) must be used to make the cruise light illuminate. It is a green light on the right side edge, half way up.

 

I also ran into trouble finding the right brake pads for the front brakes.

Had to take the old ones in and we looked at pictures until we found the correct ones.

Ford must have sold a lot of the E99 models, I sure see a lot of them around.

 

Is there a benefit to running a tuner? If you want more power on your early 99 a good custom chip will really wake that thing up, even with the smaller injectors, HPOP, etc. The older 7.3 body style trucks had even smaller injectors and those guys love a good custom chip to add power.

 

Huuuuuge benefit.

 

I love the DP in my e99.

Chet

 

I am thinking of a superchips flash paq 1855. I know the DP has more bells and whistles but I would probably just put my truck back to stock mode if I was not towing?