RS2 Airbox

034 133 837 BC

I opted for the RS2 box at the suggestion of Ned Ritchie, who said it is more compact and a better design than the S2 box.  Apparently at high HP, managing the flow of air into the mass air sensor is important.  There is a piece of plastic extrusion extending out the right side of the box that interferes with the hood gas strut.  Grind it off.  Otherwise, this box bolts right up to existing holes.  Budget conversion tip:  Likely a K&N filter would suffice up to very high HP levels.
 

element	191 129 620	buy some extras, who knows where youíll find them in the future?
grommet	431 129 669	x3
grommet sleeve	034 133 861
RS2 injectors	034 906 031 F  Bosch PN: 0 280 150 984	Way optional, also easy to install later... I didn't get them, maybe later.
RS2 downpipe	034 145 746 BB	See "Intercooler" section
RS2 Exhaust manifold	034 253 031 A	Optional, of course, but far easier to install now than it ever will be again.
Em gasket	034 129 589 A

The RS2 manifold is a "prepatory" upgrade:  No immediate performance benefit, but makes upgrading turbo later much easier.