Just changed the PVC , today. Up until I had the exhaust heat shield removed, I could not see it. Change it and its grommet and hose.
To do it ,heres how
http://www.contour.org/mods/mods.php?s=howto&displayid=15
Thank you Nishal Patel.

2012 Lotus Evora --------- 95 Mystique MTX - GONE 395,000 Kms --------- Both Zetecs '97 Contour Mtx - stock - GONE