175HP/350Nm Performance upgrade
1.9TiD manual E270006401
1.9TiD automatic E270006411

The enormous effort made by Hirsch Performance to develop the diesel performance upgrades has paid off. With the Hirsch Performance software upgrade for the variable turbo geometry 1.9 TiD engine, the torque is generous already at low rpm’s, and accelerations are delivered smoothly, without running out of power too early at high rpm’s. Extensive durability tests both in the test bench and on the road ensure a very high reliability, and the driving performance matches a gasoline car, but with unbeatable economy.