advice needed on exhaust, urgent advice on exhaust! Options

[krayziekurupter]

hey whats up everyone. right now im riding with open headers that i just installed and i need advice on what i should do for my exhaust. im wondering what would be best, like if i should leave my regular diameter of my piping or get 2.5? and if i should keep my old cat or get a high flow cat(would it make a diff?). really need some opinions on what would be best to gain some horse power. thanks

[xs94st]

u can buy a SRI (Short Ram Intake)

there are some that are made for our car on eBay for about $15.99 plus shipping, total comes out to about $35-$40. some sell for less, some for more, just depends. but the filters that ususally come with it are pretty cheap, so upgrade it to a K&N filter.

its possible to get a CAI (Cold Air Intake) but they aren't that easy to come by for our cars. some just use pipings from other makes n models n fabricate them so that they fit into our engine bay. but the difference in HP for us isn't significant, as the 7afe was built as an economy engine.

or, u can buy a drop in air filter that simply replaces the factory filter with a more free flowing filter. those are availible by K&N as well and work to help out, but i believe that with a SRI you can have a lil more throttle reponse than with the factory setup.