Software upgrade for 9-3 175hp Linear 2003->
Stg1 210Hp and 243FtLbs Torque (Software)
Stg2 235Hp and 269FtLbs Torque (Software, Catback Exhaust)
Stg3 250Hp and 280FtLbs Torque (Software, Complete Exhaust incl. Sportcat, Aero Airbox and Aero Injectors)
Stg4 275Hp and 295FtLbs Torque (Software, Complete Exhaust incl. Sportcat, Aero Injectors, Aero Turbo, Aero Airbox)
Stg3 and above in hot climate recommend intercooler upgrade. Also Step 4 and 5 require upgraded clutch / flywheel and are for manual cars only. Aggressively/ poorly driven stage 3 might kill the clutch also. Upgrade hardware is not included in software price.