The Mitsubishi 2.5 Liter 4D56 DOHC 16-valve Common Rail Direct Injection diesel engine is now force inducted with Variable Geometry technology resulting to 178 PS and 350Nm and assures optimized engine efficiency and performance at any engine speed.
During low to mid engine RPM ranges, the exhaust gas volume is sparse. The movable vanes of the VGT close to create a narrow passageway causing the exhaustgas to accelerate and spin the turbine blades faster. In a non-VGT type, the low volume of exhaust gases moving in a widepassageway will result to slow air velocity making the turbine spin slower thus turbo lag will be experienced.
During high engine RPM, the exhaust gas volume is dense. The movable vanes of the VGT open up to create a wider passageway to cut down exhaust backpressure resulting to higher turbine speed and boost level.
