Banks Intake and exhaust system
Hi all ! My neighbor installed a Banks intake and exhaust system and claims it improved his gas mileage on a Class A V-10 362 hp. Has anyone experienced the same results? Basically, is this wo...
Forum Discussion
timmac wrote: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 ?
Huh? Well of course! Newer heavier motorhomes often get the same or better mileage with smaller engines than those of yesteryear because the BSFC (which you say is no longer accurate) spec's are better due to improved engine/transmission design at the factory. Please read up on BSFC. It is a timeless measure of engine fuel efficiency that is more pertinent today than ever. Newer transmissions also have more forward/overdrive gears than previously which also helps fuel mileage.
Again, generally, fuel mileage is not measured at max. rated power/torque so your point about HP/Torque is not relevant to this discussion on fuel mileage which as far as I'm concerned . . . . is over.
Chum lee
