Done this with a RSi inlet, i run a trijekt full mappable injection and converted the big RSi throttle body so I can use a TPS (from a Boxster)









With a 3i inlet, cut off the adaptor plate for the throttle body and weld a plate on that the 2i/FRST throttle body fits. Use a idle control valve that sits on the air filter box (XR2i, RS2k), there's a hose connector on the inlet