Honda civic k&n cold air intake??

Question

my friend installed one in his car and got 5.71 more hp and i was wondering if it put up the mpg or put it down??

Answer 1

one thing i hate about k&n cold air intake that its not legal and you cant smog it because there's no carb number

but oh well just the intake could always change it back to stock in 5min

Answer 2

You will def. notice an increase in mpg, your allowing colder air into the engine (colder air has more oxygen) That way you have increased performance, as well as gas mileage. Good choice going with K&N and not a knock-off.

Answer 3

Helping your car breathe better always is a good thing.  You might notice some slight improvement in mpg but probably nothing huge.

Answer 4

Your mpg will definitely increase.  Maybe not by a large amount, but enough to make the intake price worth it.  I installed on on my Prelude and I saw a difference of about 3-4 mpg.