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07 Kenworth W900L hp and mileage?

5200 Views 6 Replies 7 Participants Last post by  Licensed to kill
Just bought an 07 W900L. Has a C15 Cat, 475 hp, 18 speed, 3.70 gears, and tall rubber. Finally got it on the road this week and so far I've been disappointed in the fuel mileage I'm getting. I haul grain and have a 50 ft Timothy triple axle and gross 88,000-90,000 lbs per load and have been getting about 4.2-4.3 mph and would really like to get up into the 5-6 range. I started looking into ECM upgrades, tuners, etc. I've looked into PDI Performance, Bully Dog, and Pittsburgh Power. Does anyone have experience with any of these or anything else? I like what PDI has to offer but it's quite pricey. Looking to bump power along with fuel mileage and I guess I'm looking for the best bang for the buck but want a quality product as well. Any help is greatly appreciated.
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You bought a beautiful truck with an awesome drivetrain. But you were not going for mileage. You will spend heavy to get a tiny bump in mileage. I would enjoy the fancy truck until you really get serious about mileage and trade it for one that has it from the start. Take that with a grain of salt cause I'm no trucker.
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