i got a 2nd hand superchips bluefin for $550. they offer a stage 1 (no supporting mods required) which does 54NMs more and 41HP. stage two can offer half again as much, but need fuel pump, dump pipe and intake. took 3 mins to reflash via a hand controller. ive done no other performance mods to the car. only HID conversion ($2.5k for HID pffft) and a fully integrated ipod interface to the satnav system.
leon, your wifes A3 if its more than 3 years old can do a remap via the consult, however all the new diesels (like andys) need to have the ECU removed and perform a bench flash.
i get boost from about 1500rpm and it wheel spins in the dry around 3k into 2nd gear. wet weather, forget about it. however this is a FWD car but it handles VERY well for an ass dragger. the sydney people will see it next weekend if they come to the meet