whistle?

[Tamago]

Originally Posted by silver_echo

aren't they all the 1nz-fe? should be the same all the way across, and it looks like the same manifold one the yar

no sir.

different intake manifold
different throttle body (theirs is drive by wire, ours is obviously cable)
different mass airflow sensor (we have an older denso unit, shared ironically with the STI)

etc etc. the list goes on.