im in canterbury and looking for someone to do a diagnosis on my car and tell me what problem is  now only 5 psi not got lot of power like before .. starts and drives but wont it resolved new belt and pullys do need a tensioner think it may of jumped teeth on the belt i have changed the belt and pully s   but need help to find what is wrong

Had good feedback from other Subaru owners from your neck of the woods 

http://www.larkins-autoservices.com/

A few people I know use a Mobile Mechanic, Tim Farmer (Ex Zen Performance). Good guy and cheap 

He is based in Cambridgeshire but will travel (Suffolk, Norfolk, Essex etc)

I haven't used him myself but, if you want to check him out either give his name a "Google" or ask "fire dawg" on here (cos he used him for a service/cambelt recently)

Cheers clive

07880661866 tim farmer