Greetings........... There are a few ideousincrasies (sp) that go with owning an X Type Diesel.Yea it does have an EGR valve that cruds up,apparrently this is an easy fix,remove clean with petrol and be prepared to get yer hands mucky. When you gave the car some clog and got some power back.............this may be due to the DPF (diesel particulate filter) being bunged up and you have blown some of the carbon out. I am led to believe that you can retrofit handsfree bluetooth to your car......check out e bay,the module on mine is in the boot behind the nearside wing boot carpet J..