Hi i did a head gasket on my car all done and back together now nothing changed head off skimmed baco on etc. Now the car will only boost to 10psi it was 20psi. Ideas please i have tried all the pipes to make sure they are correct out of the manual etc. Would the actuater be the problem??? what else controls the boost pressure the length of the bar hasnt changed. Could it be the penny wheel sticking as when i pushed some pressure through the actauter to see if it was working it looked like the bar was bending alot.

Suggestions what to try next i am going to take the actuater off and check the penny moving ok. and whip the exhaust off put a mirror up the back make sure all looks ok and shutting properly in the back.

When i drive the car it doesnt have wastegate chatter like it used to would that be because of me running lest boost.

Cheers

Ian