Re: Port Direction
It very much depends on the car and what kind of bass you like. The best way for me is to have a sealed box and I shift that baby around in all odd angles till I find what I like best (mine happens to be the sub tilting 45 degrees towards the front with the port facing up).
It might be an easier task to find knowledgable people who drive the same car as you, so that you can get a fair idea of things.
USUALLY, hatchbacks work best when the sub and port faces the back, but for SUV's (like snova), he prefers everything to point to the roof. I found sealed boxes in my minivan worked better when it's pointed to the front.
Sony C90, 210 EQ
Seas 27TDF/C, RE XXX 6.5, custom xo (dyn 240GT sitting idle)
RF 60.2 amp
Soundstream picasso 1400.1D
Bass drive-by's are uncool.