I am planning on up grading the air box, but don't know which way to go.
According to APR web page a cold air intake in not worth getting on the 1.8T.
They suggest to drop in a K&N filter. How true is this. I debating between the Neuspeed P-Flow or getting a cold air intake.

Also, is APR the only manufaturer that offers different programs to switch to.
I don't want to send my chip to get reprogramed. thats why I like the APR EMCS chip, but other companies offer more gains for the money.

panch:bandit:

As for intake goes, read this. (http://forums.vwvortex.com/zerothread?id=246241)

And yes, APR is the only chip you can switch between different chipped modes, as far as i know anyway.