I've never thought of the TBU as the tamiya "standard." More the mechanical aspect and plug and play ease as well as reliability on the battlefield. Yes most events use the tamiya code but most aftermarket boards allow for different classes, use of tammy apples and code, etc so there is no real "standard" on that. If it uses the tamiya IR code, takes hits and dies it doesn't matter what apple or IR bulb your using (thats another discussion on it's own) its welcome to fight. The only real tamiya "standard" on the battle system would be IR code and depth of IR emitter which we enforce at Danville events, but not every club, backyard battler, etc does this. For instance, you could install tamiya electronics and apple in a basic HL but it is still not up to a tamiya kit's standards in my eyes. Sure we'll hear some different aspects on this.