ok i have a 93 civic with the D15...auto...however i am putting a 5speed in it as soon as i get the time. I also have a K&N Drop in filter, i really cant complain with the 35 or so mpg im getting but i would like to get a little more.
I know that the 5 speed will help, but i was wondering if adding a header and a catback exhaust would help the mpg?
Also wondering if there was much difference in the "name brand" or just the ebay knockoffs...
Thanks