Anyone can do the programming if they have the knowledge and a laptop a cable a $300
dollar program for the laptop. you can change any setting in the computer that runs
the engine.. trouble is most of us don't have the knowledge to do it. I can buy hundreds
of chips to install with modified settings form factory. In fact i put one in my car that gives
50+ hp. works GREAT. If you have a 96+ truck then there are several dash mount programers that will change the settings every auto parts store sells some kind
the problem is none of them will work with older 94-95 computers. the trucks from back in the 80's did not have computers.. Just the trucks with the OBI-1 computers don't work with anything.

 

ive heard about this guy and he makes awesome programs and yes it is possible to have different programs but only obd1 computers because the obd2 computers dont have enough memory. dmax guys have this option too. Buddy from the truckstop and c1500 from dp is the person who makes these. this isnt a hoax he makes some really extreme tunes. he is one of the few people to really beat on and expermiate with different tunes and turbos and injectables on 6.5s. if i had a 94-95 6.5 this is what i would be buying for a tune

 

I have a Boost pressure gauge to install in the AM What boost should i see at what speed?
Now that i have the Lift pump fixed Got to see about the Turbo.

 

with the stock vac system and stock programming the max sustained should be 7-9 psi and cruising should be 2-3 psi. dont be worried about spikes either past 10 psi for a short amount of time its normal