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Old 05-27-2022, 12:31 AM   #1
Drives: 2007 5dr canadian import
Join Date: Dec 2016
Location: pacific north WET
Posts: 351
cold air/exhaust mods vs mpg

so i got thinking, would a cold air intake improve MPG by giving the engine less "work" to breath?, what about a header and a more free flowing cat or bigger pipes?

i know on old iron v8s you could truely gain MPG by tossing the iron manifolds for headers ditto for the crappy air cleaners

im not looking for HP gains but but MPG gains, but i also know with more power often comes better efficiency

has anyone ran the numbers on a CAI vs stock mpg numbers? or header/pipes?
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