i thought ur ride is an rsx?... well I have an injen cai racing division polished metal, with heat shield. for obvious reasons I choose INJEN over AEM... because -
1) heat shield/splash guard- to keep engine heat from melting filter, and water from getting into filter
2) looks good
3) injen filters outflow aem filters(k&n filters are used with aem intakes)
also, AEM's water/air bypass thing has been recalled for reasons of malfunction which have led to engine damage, severe and minor. The bypass is known to FALL off and get sucked into the throttle body, causing WHO knows what havok.
as for the dynos... they are relatively the same horsepower and torque gain, so either or should work. however I do believe newcelica.org has the dynos on the site. aem I believe does have higher power gains at lower rpm s. not sure though, i think i'm right.
my personal reconmendation is INJEN, why? because I'm happy with mine, no probs, great sound, great product, street legal, cheap power gain, I have used it and i get nothing but complements... injen - I always reconmend, quality. relatively easy to install also.