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Discussion Starter #21
Also been taking forever to get hot air to come out of the vents but that prob is due to the cold air Temps.
 

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Do you use the recirculate button or keep drawing cold air from outside.
 

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At 45 you should be in 6th still and doing much better fuel mileage than 65 because of less wind drag and friction. After 60 you're almost always in boost so much harder on fuel, in the winter time you lose volume of gasoline just from shrinkage becaus of the cold. You fill up with 12 gallons coming out of the ground @50°F and 2 hours later you only have 11.2 gallons @-10°F. So there goes 8% mpg right there, then all the CVjoint grease that's like cement when cold, the 2 differentials full of molasses. Wheel bearings, driveshaft U-joint and steady bearing all get harder to turn in winter. Mine goes from 7.3l/100k summer to 9.3 winter. Winter is hard on MPG.
Sometimes I counted up shifts while starting, but never paid much attention. My average MPG somehow managed to show 99.9 (which is in no way correct). I filled the tank, reset the average MPG, turned on my OBDII gauge set, and went to a friend's place. set cruise at 70. flat road boost gauge showed 3 PSI, Tach read a bit over 2100. some minor inclines showed boost PSI between 6 and 7. 18 miles out, 18 back. 22.5 MPG. Idled 6 or 7 minutes before return trip. My normal daily driving rarely gets above 50 MPH and that gets 0 to 1 on the boost. Thanks for pointing this out.
 
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