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I'm telling you guys, you need to get your trucks into the dealership to get the new PCM flash (TSB 08-13-2 or 08-13-3 for newer builds).
After the flash, I topped off the tank. Since then we've filled up our work truck 3 times so far (34 gallons a piece) and our hand calc for the three fillups are 15.2, 15.0, and 14.9mpg. This is a F250 reg cab with toolboxes/ladderrack and auto tranny 3.73 open axle. And yes I drive like a grandma...
All winter long we averaged 11.6... driving like a grandma. All our driving is city/hilly terrain. Lots of trips up slow windy roads to our tower sites. We are very impressed with the latest results. BTW, the dash cpu is dead on with our hand calc.
Just last week the service manager called my cell asking if I noticed a MPG increase with the latest flash. It was weird, because all I mentioned when I brought it in was that I had idle regeneration concerns (which by the way they flashed for free because of my "valid concern". The manager told me that he had heard rumors that this flash increased MPG... and I was still the only truck that his dealership had flashed so far.
Bob C
Last edited by bobbyc03; 07-07-2008 at 06:10 PM.
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