Well your issue could be adjustment with the turbo if it's been changed, like what strength actuator your now using and what pre load you now have, if running an "Amal valve" (3 piped type) then yes 1 from compressor to amal and one from Amal to actuator, the Amal valve has a letter on each pipe so make sure you have them right, thinks it w for waste gate c for charge and a for atmosphere iirc.