Mackanized has added another platform to the development fleet, a late NEVS-built Saab 9-3 equipped with the A20NFT engine and Bosch MED9.6.1 engine management system.
From a calibration standpoint, this combination is particularly interesting. Compared to earlier Trionic systems, MED9.6.1 uses a different structure for torque modeling, load calculation, and driver demand interpretation. This allows for a more precise and controlled calibration approach, especially when the goal is to improve real-world drivability rather than focusing purely on peak output.
Background
The car was sourced just outside Vetlanda, during a visit to Vetlanda Bil och Skadecenter. Owner Marcus Wigh shared insights and showed several vehicles with history from both NEVS and Saab’s original factory, a reminder of how closely connected these later cars still are to Saab’s engineering heritage.
Calibration Focus
This particular vehicle had already received a previous Mackanized calibration. The current development phase moves further, with focus on refinement rather than headline figures.
The objective is to improve how the car behaves as a complete system:
- More immediate and natural throttle response
- Stronger and more consistent mid-range torque
- Improved efficiency during part-load operation
- Reduced fuel consumption in real driving conditions
Real-World Results
Initial data from the drive home confirms the direction.
During mixed rural driving between Borås and Enköping, approximately 400 km at speeds between 70–110 km/h, fuel consumption averaged 5.5 L/100 km.
On the return trip, including urban driving in Stockholm followed by motorway cruising at 110 km/h, the average consumption was 6.3 L/100 km.
This highlights where proper calibration makes a difference, not only at full load, but in the conditions where the car operates most of the time. There is however plenty of power according to the somewhat optimistic esid!
Additional Updates
Alongside calibration work, the car is being updated with a modern head unit, replacing the original handsfree system. The goal is improved usability while maintaining a clean, OEM-integrated appearance.
Summary
This project is not about pushing limits for the sake of numbers. It is about refining the platform, improving consistency, and ensuring the engine and control systems operate as a coherent whole.
Further development updates will follow.
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