Originally Posted By R1NGA

Stage-2 from MMC adds cams and throttle body I think, which IS tuning and will lift the power of the engine by a bit more


Correct. It also adds a tuned ECU, just how tuned I will see when I have my planned tuning session, on a rolling road, courtesy of MMC.
I believe I am currently running around with all stage 2 minus a tuned ECU.