Quote:
Originally Posted by thedieselguru
I know that there are different calibrations for 250/350 and 450/550 trucks. Have any of you played around with the 450/550's much? What are you finding different about them? Are they different to tune or are the maps pretty similar? For the most part, they are very similar. On the other hand, the "big" trucks will be able to use the same tuning as the "small" trucks.
Also, my work truck is a 97 F47 with a manual trans. It hits the scales for about 12k but the 4.63 gear gets it moving easily. Problem is, 9 mpg! 45mph is around 2000 and 70 is over 2600. What would be done in tuning to help mpg's? I'm working on getting the boss to turn over the funds for minotaur and use this truck for a learning project. Hope to be purchasing this month so I'm trying to get a feel for where to start. 12K lbs. and 2600 RPM make for a very mileage-unfriendly situation. The best thing you could do is try to keep the RPM below 2100. Any real "tuning for economy" is going to be negated by those high RPMs.
Thanks
Roger
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If you have any other questions or would like a more elaborate answer, feel free to ask.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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Wed, April 14th, 2010, 01:41 AM
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