Chip reflashes won't change your world on the R32 - the effect is mild but effective (particularly at smoothing out the power/torque curves).
I think APR allow you a 6 hour obligation-free trial before you buy, that'd be worth a go if they have a local dealer (check www.goapr.com.au for their dealer list).
As you're in Adelaide, Custom Code may well be an option for you (Gavin who does the CC install is Adelaide based, send a PM to h100vw).
I don't know the availability of GIAC or any other tunes (MTM maybe?) in Adelaide, other locals may be of assistance there.
Bookmarks