Steve,
Huge thanks for the information.

K-jet is not my thing so would you mind answering the following :-
What is the function of the EHA and what does it stand for ?
Is this appropriate to non CAT cars ?

Many thanks.

Oh Yes , just 1 more thing , is it possible to read fault codes off the Diag socket with a multi-tester , if so where could I get the code tables.

Cheers

Gary