Shortly after becoming the official supplier for ECU upgrades, aero kits, brakes, exhaust systems, and a few other modifications for Saab models on the US market, Hirsch Performance is getting to work with the beginning of what we’re sure will be a long list of tuning projects for the Swedish automaker. The first project unveiled was the 9-3 models shown at the Chicago Auto Show, and the next is this tuning package provided for the 9-5.
The name for the package comes straight out of the power behind it. Hirsch Performance has taken the 2.0T Turbo4 engine found in the Saab and equipped it with direct injection, a modern twin scroll turbocharger, and improved charge cooling. The result is a total output of 260 HP and a peak torque of 295 lbs-ft. Thanks to the twin scroll technology, the throttle response is also significantly faster. The 40 HP increase is accompanied by a new top speed of 155 mph.[...]
Source: topspeed Tuning