MOT passed.Drove to work today with this. Note to self: use ear plugs for even better ride comfort in the freeway than in my stock daily driven Sierra.

But I have a problem, boost keeps rising too high up! I can hear the wastegate opening at 0.5 bar (screamer pipe) but still on third or bigger gears it keeps rising. 1.1 bar has been max today, that's where Megasquirt is now set to cut off fuel & spark because I was afraid of this possibility. Hopefully I will find an easy solution...