5.4 Supercharger Options

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pirate air

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not likely. about the only way you'd gain any mpg is if the tune cleaned up your part throttle a/f ratio.
 

pirate air

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what type of an impact do you think a blower or a snail would have on my MPG?

Blowers are getting more efficient and turbos have always been efficient. If all you're counting is idle and cruising time (not in boost, intake manifold still in a state of vacuum) you won't loose much, 1-2 mpg. But that maybe washed depending on the tune, specially since you're stock(??).
 
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BIRDMAN

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Blowers are getting more efficient and turbos have always been efficient. If all you're counting is idle and cruising time (not in boost, intake manifold still in a state of vacuum) you won't loose much, 1-2 mpg. But that maybe washed depending on the tune, specially since you're stock(??).

for the most part stock. just a muffler.
 
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