I have a 2001 Civic EX i have a 4 to 1 header new down pipe and catback exhaust as well as a short ram air intake. i have about 400 bucks right now to blow on it. i know there's not a whole lot you can do to make it much faster but i was wondering if anyone could suggest anything such as fuel rails, injectors, or anything that would help me use what little power it does have more efficiently. im not trying to make a race car (which im aware wont happen) but if i could help give it a little more kick for a decent price that would be good, any input would be appreciated.