so you have never been tempted to up your boost??
I know i have, and have been very lucky not to damage the engine, its too much temptation to have one fitted, at least with just the actuator you are less likely to change the settings as its a pain in the arse to get under the car and change it.
Once its set on my car now, generally i leave it alone except the odd occasion when i 'may' give it half a turn