Forum Discussion
timmac
Dec 02, 2016Explorer
When you can increase more torque on a motor in the lower RPM range you can get up a large hill while working the motor less, less RPM's and a lower gear in some conditions, also the motorhome can gain speed faster and easier with more torque and HP, if one does not drive it like a race car you could get some better mpg.
Also remapping the computers to make the motor burn fuel better and shift better like 5 Star Tunning does also helps.
Also the BSFC is not so accurate anymore with the new motors and better computers on board to control fuel burn, we have more HP/Torque on some of the same size motors than we did 20 plus years ago with better fuel mileage.
A good example is a old Ford 460 cubic inch 35 foot motorhome from the early 90's that weights around 18,000 lbs gets about the same MPG as a newer Ford V-10 415 cubic inch 35 motorhome that weights 21,000 lbs.
So why does a heavier motorhome of today gets the same or sometimes better MPG with a smaller motor with more HP/Torque than one 25 years ago ?
Also remapping the computers to make the motor burn fuel better and shift better like 5 Star Tunning does also helps.
Also the BSFC is not so accurate anymore with the new motors and better computers on board to control fuel burn, we have more HP/Torque on some of the same size motors than we did 20 plus years ago with better fuel mileage.
A good example is a old Ford 460 cubic inch 35 foot motorhome from the early 90's that weights around 18,000 lbs gets about the same MPG as a newer Ford V-10 415 cubic inch 35 motorhome that weights 21,000 lbs.
So why does a heavier motorhome of today gets the same or sometimes better MPG with a smaller motor with more HP/Torque than one 25 years ago ?
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