if it's a stock motor don't expect VTEC to make a loud noise when it kicks in...if you want VTEC to seem louder get a cold-air intake or a short ram and get some exhaust stuff...if you have more money, get some nice skunk2 or crower cams.

stock, the VTEC in B16s is quieter than in B18Cs (as far as I've ever seen), so it won't be hugely loud until you mod it somewhat.