I believe Joe from powertune was in a nasty car accident and that was the last I heard of them.
Try e-tune
https://www.facebook.com/eTuneUK That's e-tune
Are etune any good with diesels? I've heard a few dodgy stories about their petrol tuning
I run an e-tune map on my RS250, will be going to ecotune or rstuning next you to get a new map though, take from that what you will......