its vtec... im not gonna rip on you about it, but dont be suprised if you do. as for I/H/E, you really wanna search, you will find TONS of information on performance products. you dont know how manny threads are posted that sound exactly like yours.

the usual mods are intake/headers/exhaust, there are manny different opinions about different brands, so id say you should reaserch what will best suit you. tires, and suspenions is another thing that people do, which also helps out, but again, theres so manny options, you just need to research you best siuited application. some will tell you to keep you money and boost it, others will say NA is best.