which would be better?
 

Just wondering if the cold air box id better than the cold air induction?

What the heck is cold air induction? U mean like the AEM sh*t I've got on my civic? Just get something that'll let your engine breathe (I've got apexi air intakes on my fd) because your turbos will heat up the air anyway so its really up to the intercooler if you want "cold air"

Yep.

My thoughts exactly. I still can't figure out why everyone wants to do "cheap" airbox mods or use ducting to draw in cold air to the intake when the turbo(s) will heat it up anyway...

i thought if u have cooler more dense air to begin with it would easier for the turbos to work. and the then after the turbos heat it up the ic will cool it back down yet again.
at least i notice it on my single.

Yes, a proper sized single is not going to generate the same amount of heat as the twin reactors. ;) In that case, you might see the difference more just like a N/A would see the difference a lot more.

While there is bound to be a difference after the twins have cooked the air, most likely it's not going to be that noticeable (i.e. you'll gain something like .06% of a power increase by having a true cold air intake).

There have been several people on the twins who have switched back and for between open air and cold air intakes and never really noticed a difference.