I have a dp tuner on my 96 econo with a 7.3. I LOVE IT! Its got plenty of get up and go. Boosts to 28ish I think. I gotta get a better boost gauge since mine only goes to 20. Its got multiple settings that controlled with a controler. No loading and unloading tunes with flash programmers like edge and others. My mileage increased 2mpg highway and the fun factor is tripled.
Next is exhaust from hypermax, intake if I can make one since there little support for the early psd vans.
Also once you do tuner, intake and exhaust. You should get gauges to watch the temps. Noone's said that and its an important part once you start adding the go fast goodies
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