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Discussion Starter · #1 ·
ok here's the baseline:
93 Daytona 2.5 5-spd with 3.77 gears

Stage 1) Change to a Omni Airbox gutted with a K&N air filter.

Stage 2) On top of Stage 1, also changing exhaust to 2.5'' with high flow cat and mufflers.

Stage 3) On top of Stage 1, also changing exhaust to 2.5'' with high flow mufflers. - minus the cat. aka Straight pipe

-Now at each Stage, what do you think the MPG increase is?

Thanks in advance

Bigfoot
 

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Theres too many variables to predict mpg. I guess you could try to assume the driving habits are the same after each mod.

I would also try things such as a tune up, as well as tweaking, say the ignition timing, maybe cam timing, spark plug gap, things like that.
 
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