Originally Posted by AtlSaabMan
Thank you for that valuable information. Couple of follow on questions 1)How can I tell if I have the Trionic 5 or Trionic 7 ECU? 2)Is it possible to purchase the European ECU and have it shipped to the states and have it work properly?
As Diggs said, you have the T8 or Trionic 8 ECU. All 2.0 litre engines in the 9-3SS use this software.
As far as question #2, Yes it is possible, but other than Stage 1 Tuning (Saab Tuning packages are commonly sold as Stages, Stage 1 being the first step more powerful than stock, and Stage 4 usually being the strongest) I do not recommend it. As the software programs are tweaked for greater performance, the allowable margin of error for all inputs to the computer become tighter. My personal recommendation/opinion is that for Stages 3 and above, after the software is loaded, someone very familiar with Saabs and performance tuning needs to verify all inputs to the ECU. Too lean of an Air Fuel Mixture will cause your pistons to melt! Stage 2 is somewhere in between. Often Stage 2 is Stage 1 software with a few external mechanical bits. Stage 3 and above have a broader requirement of mandatory external engine bits to safely produce the power required.
Another thing I forgot to mention earlier is that the 2.0 litre engine in the 9-3SS shares some parameters & base components with the 2.0 litre engines in the Chevy cobalt. GM Performance will sell you the pieces to turn a Cobalt engine into a 1200+ HP screamer. Some of these parts will fit the Saab motor, some won't.