need opinions!!

I have a chance to order anything after market thats within 200 to 250 dollars. im wonderin what the best thing i could get for performance, atleast in your opinions, especially if its from experinece. i already have intake, header, and exhaust, so not any of that. im thinking maybe an underdrive pulley. anyone have one and seen gains from it? any help will be appreciated.
thanks
;)

come on people, no one has ANY ideas? also, does anyone know if a 99 si or 94+ gsr throttle body will fit a zc?

Originally posted by nicks91civicsi
come on people, no one has ANY ideas? also, does anyone know if a 99 si or 94+ gsr throttle body will fit a zc?

i've heard that 2 of 3 bolt holes line up, then you drill out the other one to make it line up

how about a power boost valve?, my m8 has just fitted one and recommends them, they are £100 ($160) here

Originally posted by civic 16valver
how about a power boost valve?, my m8 has just fitted one and recommends them, they are £100 ($160) here
a power boost valve? please let me know what that is. iv never heard that before.

check out the link

they have been fitted to 2 of my m8s cars and they both rate em


http://www.proven-products.co.uk/products/fse_power_boost_valves.htm

is it a fuel pressure regulaor? If it is then thats real expensive, those are only 60 bucks over here.

Originally posted by 91civichatch2571
is it a fuel pressure regulaor? If it is then thats real expensive, those are only 60 bucks over here.

i didnt see the price on it usually they are around £100 or $160