It's not overboost, on this hot day i haven't got 1 bar peakboost maybe 0.8 when i'm lucky
So i think that i have a faulty act sensor or it's just to damn hot.
What was the plug gap?? 0.8 to 1.0mm??
Plugs are 1,5 year old.
What happens when i disconnect the ACT sensor and take her out for a testdrive??
cheers