Quote:
Originally Posted by oil pan 4
A Turbo gasoline engine need 20% fuel to make the same horsepower as a N/A motor.
But on the other hand a turbo diesel gets better fuel milage with a turbo. I have done the N/A to turbo diesel thing and picked up 2mpg on my diesel suburban.
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exhaust restrictions are the devil.
and so are engines that need exceedingly rich AFRs to keep cylinder temps down.
diesels love air.... and lots of it. not surprising to see a bump in fuel economy when pressurizing them.