At the Saab Owner’s Convention this year I put my Saab on the dyno twice, three pulls for each run. Since my last dyno I have installed the Viggen turbo, the dual stage boost control, crushed the FPR from 3.0 BAR to 4.2 BAR and put a resistor on the MAP sensor to give me a 25 psi boost spike. Below is a picture of my Saab on the dyno and the first run printout. The first two pulls were with the ECU controlling the boost. The last pull, blue, was with the manual boost control. It gave me more torque but surged the turbo, which is the reason for the humps in the power.

After my first dyno run I met up with Frank Strömqvist. He was at the convention making custom ECUs. I gave him my ECU and he created a more aggressive program and raised my rev-limiter to 7000 rpm. After a few measurements and adaptation runs I put my Saab back on the dyno.

The new programming is awesome. Power is extremely smooth and pulls from 3000-7000 rpm. What is really amazing is that I am now making more power on less boost. Max boost is now 18 psi. I removed the resistor on the MAP sensor and the MBC to give the ECU complete control. Frank noticed that it was running rich so I also changed back to the 3.0 BAR FPR, but that was after the dyno run. Talking with Frank and experiencing the new software has shown me that many upgrade techniques we do to our Saabs are wrong. I highly recommend SQR over any other tuning company out there.

These dyno sheets also show the benefits of water injection. The temperature for the first run was in the upper 70’s and it was in the lower 80’s for the last run. I saw the results from a lot of other Saabs and they showed a loss of horsepower after each run due to heat soak. Usually around 4-6hp lost for the second pull and again for the third. My 3 dyno pulls are practically identical, and the last pull produced the most power.