The most helpful (knowledgable) person I found with my UTEC was Shariff @ Forged Performance
I've still got mine sat in a cupboard gathering dust. I need to get around to testing it one day to make sure it definatley is faulty
TurboXS make theyre own wideband controller which is used in conjunction with the UTEC but I was using the AEM w/b gauge with mine
As above though, very few tuners in the UK for it. Thor can do it, RJN can do it & so can WGT. For the cost of the unit & mapping just go with uprev, especially if staying N/A