Set the wastegate using springs, it was built to be set using springs. I stopped trusting MBCs after trying to use them
Run your boost gauge into a proper take off in the manifold. If you come over here ill drill and tap your l bend and fit a brake bleed nipple to give you a proper reading.
Buy me these and ill do it for free http://www.ebay.co.uk/itm/Bleed-nipples-...337647a06e
EDIT, little worried as to what you've ruined. Was it holding steady at 30psi or was it effectively off a 30psi gauge? If you have been running 21psi + 25psi thats well over 40psi and that will kill a HDi happily.
Does it sound like its running on 3 cylinders?
I think you could have 2 problems, 1 something has fallen off or youve done an engine mount and thats your vibration
2 down on power with no smoke is pretty specific as it means its not injecting the fuel to make the power
Run your boost gauge into a proper take off in the manifold. If you come over here ill drill and tap your l bend and fit a brake bleed nipple to give you a proper reading.
Buy me these and ill do it for free http://www.ebay.co.uk/itm/Bleed-nipples-...337647a06e
EDIT, little worried as to what you've ruined. Was it holding steady at 30psi or was it effectively off a 30psi gauge? If you have been running 21psi + 25psi thats well over 40psi and that will kill a HDi happily.
Does it sound like its running on 3 cylinders?
I think you could have 2 problems, 1 something has fallen off or youve done an engine mount and thats your vibration
2 down on power with no smoke is pretty specific as it means its not injecting the fuel to make the power