replacing the actuator is simply 2 nuts, a circlip and a hose clamp. you can buy an actuator for about $150 from gcg turbos. & of course you'll need a retune after. the problem is due to where the actuator is located. Its fairly difficult to get to and if your not equipt with quite a selection of limited access tools you will have to take the turbo off to change it. I changed mine with the turbo still on, had to remove all the nearby piping, heatshields and dump pipe. (makesure you set the actuator rod to the correct length when reinstalling. If $500-$850 is supply, fit and retune, its proably fairly reasonable. -mitch