Quote:
Originally posted by accordboy00
do i/h/e and other engine mods increase or decrease fuel economy?
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Technically, air-flow mods increase efficiency, therefore increasing your gas mileage. This is fine if you're using cruise control on the freeway.
In actuallity, if you have I/H/E, you'll need to give your car a little more gas to get off the line, decreasing city gas mileage. Also, it sounds cool and you'll be tempted to hit the gas to hear your car roar. That doesn't help mileage any either
