Discussion in 'Superchargers and Turbos' started by jasonada, 11 November 2016.
This is the mod we used to do back in the day before fuel injection. As long as there is enough fuel to match the extra air and you don't exceed what the car ecu feels is safe you should be ok.
Most ECU's will enter a limp home mode if the boost goes too high.
Generally tightening the wastegate actuator rod will keep the gate flap closed a bit longer allowing the turbo to rev faster thereby increasing pressure higher than before HOWEVER this can lead to damaging the engine.
Basically more air being crammed into the cylinders without the corresponding increase in fuel supply to keep the Air Fuel Ratios safe can lead to detonation resulting in a hole in the piston or damaged ring lands.
My experience is with modding a gas powered car and not diesel powered BUT I would tread carefully as diesels are more expensive to repair when things go bang.