gauges are not a must have, people have been running tuned trucks without them for the past 23 years. but i would never do it.
a chip from any of the more reputable tuners will work good for you. DP tuner, a site sponsor here has real good tunes. my 02 in in 80 econo tune on the DP F-5 chip 99.99% of the time. it only gets returned to stock if my daughter uses the truck.
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