A. If you simply plug the hole and leave the sensor plugged in, you may cause yourself the loss of a turbo from lack of oil flow. Let me explain. The same feed port that feeds the turbo bearing is feeding the EBV piston. There is one supply port and one return port in the pedestal. When the EBP sensor sends the signal to the pedestal to shut the valve,which is not there in this case, the oil dumps off to the return port in the pedestal with no resistance. This is the same return port as the one for the turbo. The piston separated the two when it is was properly used from the factory. Basically, while the valve is being actuated or attempted to in your case the turbo gets no oil or very little. The turbo bearing is the highest place in the engine for oil to travel and it will follow the path of least resistance. If you remove this piston in the pedestal, you MUST not allow computer control of the valve any longer. You must disconnect the sensor from the pedestal. Yes, you will get a code (not a light) telling you the valve is non-operational, but it's the only way to do it.