scooby2nr

recently my car started feeling down on power and not boosting very high, i found out the intake pipe split at the turbo, which i replace but it still felt really laggy and down on power. i've changed the actuator as it had a lot of play in it. the boost is back up again but its still coming in far too late, not boosting till 3.5k revs.
can anyone help?
p.s no fault codes are present.