Originally Posted by hosejockey2002
That's one of the funniest things I've ever read. It takes FUEL to make power, period. It's possible to make an engine more efficient by improving intake and exhaust as well as adjusting injection timing. But to get more hp, especially the really hot tunes it takes more fuel. Everyone I've talked to that has chipped a truck for more power really likes it but they admit that mpg is the first thing to go once the power is turned up.
Even with a chipped truck you are still going to get way better fuel mileage out of it than you will with a gas truck. The towing tunes are designed to increase your power through the powerband in all gears and some are setup with a turbo brake to help with slowing you down. They keep the rpm's late addy which is saving you fuel in the long run.
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