Hi All, I have just recently purchased an 03 BA Auto XR6 T with full service history bog stock, except for an alternative muffler (slightly louder than stock). I wanted to increase boost a tad but nothing too crazy as my girlfriend will also need to drive this car and I don't want her killing herself or losing her licence. My question is and I know this has probably been asked a million times before by noobs like myself, do I need to purchase an addon unit for ECU? or can you reflash the actual ECU? I have done a tonne of reading on the forums and it seems you can't just install a bleed valve and tweak it a bit? any info in regards to this will be helpful, I am in melbourne so if and when I need a tune it will be great if anyone can recommend local tuners. Steve