Hi all

Having issues with my shogun, keeps dropping into limp mode and throwing up PO299 turbo underboost. Been to a diesel specialist who diagnosed a blocked map sensor pipe, rectified this and it ran ok for a couple of weeks. then started to limp againwith same code, recovery would turn of eml and it runs fine for a week or two then same. Its had some Forte turbo cleaner and some intake cleaner and yesterday a new map sensor but still same today, drove 5 miles and into limp mode again but this time the eml wont clear, still PO299.

any clues

Nathan