Hi Steve, my mate in the mitsu dealer showed me their usual solution to this, when u look down at the wastegate linkage there are 2 allen bolt adjusters, they screw the top one in until there are only one or two threads visible-this usually equates to a boost of 2 to 2.1k on the scanner. The usual complaint is code 49 and mil occuring on a big hill! (plenty in wales) hth, ian(n)