ok peepz..

i have a 2wd saph on stage 1 atm, in couple weeks its going to get closed loop, which requires a 4x4 ecu, but at the same time its going to get stage 3 treatment..what do i actuly need for stage 3, as im a lil confused, as my cars 2wd will i still need all the 2wd equipment or 4x4 equipment because of the ecu?

cheers