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[Thread Backward] Mileage/Power Improvement After Break-inMsg # 4892 of 8004 on Powerstroke Diesel Conference (1)To: All, From: Dave Time: Sunday 01-25-98, 02:12 am Folks, Just picked up a new '97 F350 CC PSD, E4OD, 4x4, 4.10 gears. Sadly, it seems to both have less power and get poorer mileage than my '94 F250 SC IDI factory turbodiesel (w/ aftermarket turbine housing & exhaust), 4x4, E4OD, 4.10. On other PSDs that I've driven, when tromping from a standing start, you can see the engine rev to the torque converter's stall speed, and then, over a half second or so, feel the boost come on, via the seat of your pants, with a nice satisfying rush. This one is much less distinguished in its coming onto the boost. I don't hear any kind of rushing air sound, so I don't think that the exhaust butterfly is sticking shut. At about 175 miles, took it out solo, with an empty bed, for about 200 miles, out and back, on terrain that gains elevation (1-2000 feet) fairly smoothly over the hundred mile radius, starting pretty near sea level. I got what I consider to be a miserable 16.1 MPG, having filled the tank to the brim both before and after the run. On some steeper hills around here, it would barely pull beyond 70 MPH, taking 5-10 seconds to gain each additional 1 MPH. My recollection of my IDI is that it accelerated in that situation at least twice as fast. So, my questions to y'all are: Is this typical performance? Anybody else disappointed? Any suspicions as to what's up? How much improvement can I expect as the engine breaks in, and how long will that be? TIA, Dave Replies to this message:
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