You need to get a tune for the
TBE, but it doesn't have to be ecutek. There are a number of options you have as far as tuners go in Perth. I don't know all of them but Allstar Garage, Maximum Motorsport, and EvolutionR come to mind. ASG use verso while the other two are ecutek. I think the only notable difference between the two is that ecutek locks you out of your
ecu.
Tuning is definitely recommended and your car will improve immensely. Power and torque will improve, as will the way the car drives in general. Can't recommend it enough, your
TBE is going to waste without it.
My first tune with ASG cost me around the $1100 mark.