i'm looking for a hb and i was wondering about the stock motor setup. what other ones were there besides the d16? i've seen people build them up and stuff and i was wondering what they can do? i mean what are they capable of doing as in what they can do as performance and what they can handle. i going to get a b16a but until then i figured why not get a little power in the mean time. another thing is, i've seen people run a dc header with no piping. wihtout the piping does it lose or gain hp? i know its loud and doesn't seem to be good for your compression but in higher rpms is it better or no? does anybody have a setup like that?

thanks