However, there is one “BUT.” Without calibration VNT and actuator, such a turbocharger will not work correctly. This will lead to improper operation of the vehicle engine, increased fuel consumption, reduced vehicle power and even failure of the catalyst and diesel particulate filter systems and the engine itself. The result of improperly configured turbocharger is customer dissatisfaction and complaint.
As a rule, the cost of equipment for tuning VNT, vacuum and electronic actuator is excessively high. Conventional service station cannot afford such equipment, and therefore prefers to turn to professional restorers of turbines.