Hi Guys,
I thought i'd post a few photos to help people find the DSI clip, my car has a P1518 fault that comes and goes, so my clip is fine so im guessing my problem is with the IMRC but here are some photos to cheack the DSI, hope they help

Look between side of the air filter box http://tinypic.com/r/23uohnp/6 you can see it from here, if not
remove the air filter box http://tinypic.com/r/2ii8h9y/6 & http://tinypic.com/r/13zstap/6 and you can see it here
this is a close up http://tinypic.com/r/2ijm92w/6

hope they help