No experience of Jordan's, but what I would say from experience is that you tend to get the best results from Dynojet Approved Tuning Centres and Jordan's isn't one of them.
        
 
         Your two nearest are:
         
        
 Ian E Racing in Leeds - 
        
http://www.iane.co.uk/
         
         Swinton Motorcycles in Mexbrough - 
        
http://www.swintonmotorcycles.com/