Before you adjust the actuator bare in mind the 30 will be flowing more at the same or less pressure than the 29. If your not mapped for that extra flow the motor will lunch itself in relativly swift fashion.
^ listen to this post. Bigger turbo is going to have less restriction, therefore the same pressure as before on a larger turbo = greater volume of air = need nore fuel. It's not just a case of running it to 1.8 bar as before to run the same.