PaulJ
That's true the Supersports had problems getting through the MOT but a free ECU flash was made available and this is no longer a problem.
You are getting very good mpg..on a par with my P4SS..but I do know owners who see 17--20mpg when pressing hard !!!
Regarding the engine deal..I couldn't possibly comment but there is a TM member who has a close connection with the engine manufacturer !!!!