No dramas.
Right, well - on to your questions I have no idea what a TBE is, but if the car is stock - you wont be tuning it to 230 awkw. The ECU itself is an arse to work on, theres been some limited success with EManage Ultimate as a piggy back, but even then I dont think youre going to get that sort of power out of a stock car. A company in sydney is apparently working on remapping the ECU, but I've been hearing that for the past 6 months.
Sound system is okay, if youve got the factory 'upgraded' Bose system, it has a sub in the spare tyre hole, and is a bit better - but if youre an audiophile you may well want 'more'. I dont think, stock, they ever had amps from the factory.