I've been messing with my Wastegate. The 1st day I took the car out I got 14psi out of it. I tightened and I was at 18psi. I tightened it some more yesterday and now I'm at 22. I was bit scared to get on it today. I wanted make sure I got the car home in one piece until I saw an Audi S5 take an entrance ramp fast. I decided to also without thinking but 22 is probably ok. The new turbo doesn't spool as fast but it pulls harder up in the rev range. I'm hoping to get it to hold 25 psi. I'm hoping the motor will hold too.