most effecient chip for 2004 chevy silverado 2500 hd with 6.0 gas engine
truck is all standard, no oversized tires or lift kits. have 99,850 original miles on original motor. just pu new plug wires and plugs in. this is all that has been done to it. any advice will help, thanks tom
Your already set up to get the most efficient fuel mileage out of the truck. If you are look for more performance, then you would have to send the computer in for reprogramming.
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