I realise there have been numerous posts/threads over the years on ECU tuning. However in the past 2 years or so there have been several dongle flash tune devices on sale for LP 550/560/570 cars. I have been looking at what's available and it seems to come down to Zeuss, RSC (may be discontinued?) and VR. All cost $2-$3k and more for me as I'm in Australia. Has anyone out there purchased any of those devices and if so did you get pre and post dyno runs done (which I will do if I buy). I'd be very happy to get any feedback. If you have a TT car please don't post here. I am very happy with my 550-2 but quicker paddle shifts would be great and 30+ bhp would certainly be noticeable.