Contour Enthusiasts Group Archives Forums Branches Eastern Canada Good Shop for my tour in Waterloo/Guelph?

I agree with Mark although I would check the IMRC linkage at the LIM. This is famous for coming off and showing a loss of power above 3500 RPM. Below approximately 3500 RPM, dependant on acceleration WOT or gently accelerating, the secondary butterflies remain closed to give increased torque in the lower RPM range. Above this the secondaries open and you can feel the difference in acceleration. If the linkage is broken only the rear bank of butterflies would open and you would have very little power in the upper RPM range compared to if they were working properly. First look at this then move on to possible IMRC failure and then plugged cats which are very expensive to change.