hi mark thanks for the reply
the turbo has a vacume supply to a solonoid to control the boost pressure that pipe then feeds the actuator on the turbo and the actuator has a position sensor that reports the pposition of the actuator back to the ecu. i wondered if the ecu has to relearn the position.
the car has been on test this weekend so will know more on monday
there are conflicting code meanings one from sepecific saying 00665 boost pres regulation control range not reached p0299 short with power intermittent and then the eobd definition of same code that is supercharger/turbo insuficiant boost.
thanks again for help