Hi again guys. back to the people in the know for an answer to this one please! Our 94 2.3 aero has suddenly developed an awesome wastegate flutter worthy of being featured in 'Too Fast Too Furious' :lol: - but strangely at the expense of the atmos dump valve which has gone all but silently. Common sense would lead us to believe that in some way the pressure is being diverted just to the wastegate. Is this possible?? Any suggestions for the best way to fill an hour chasing and checking the glitch??!! Thanks in anticipation of your help :cheesy:

Have you checked the operation of the boost pressure control valve?