Note that I'm not an ASUS employee but this is my perception from reading many users here who have required service:
Generally ASUS won't void your warranty unless it is apparent that something you did has damaged the system. However, if you ever need to send the machine in for service you should revert it to stock first. This eliminates any question of whether your parts caused the issue and if they have to replace your laptop you would not lose the parts you have invested.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…