ok guys can update this a little bit now. yes I know what pinging sounds like and I havnt heard it ping at all. also tonight it seemed it didn't need to cool down for it to change to high boost again. left home went to a mates house about 30 mins away, sure enough about 15 mins into the drive went to low boost. fot to his house sat out the front with the car idling for maybe 2 mins waiting for him to come out, left his house turned onto the main road and bang high boost again, again lasted about 15 mins then gone. then later on in the night, driving went to low boost, parked up for 10 mins or so, went back out and high boost. so that's kind of thrown the hot/cold thing out the window. and yes I have aftermarket actuators which are set to 7-8psi it seems.
another thing I noticed tonight unsure if related or not, when im going up a hill and in 5th gear doing say 80kph (so high load on the motor) the turbos shuffle?? almost sounds like the blow off valves constantly going off. like choof choof choof choof if that makes sense lol. seems somewhat strange to me and im sure it isn't right. ive had turbo cars previously and never had anything like this but this is my first twin turbo car. no matter how much I put my foot down it wont make boost just does the turbo shuffle, I have to drop back a gear and then it will pull fine.