This minimod makes significant changes to engine characteristics and adds shorter final drive ratios for all transmissions. Torque curves for the V10 and V12 are based directly on this datasheet, while the V8 is loosely based on this derated mining engine with adjustments based on available data to match the road-going version. With these changes, peak power for the V8 is 256 PS @ 2500 RPM, 305 PS @ 2650 RPM for the V10, and 340 PS @ 2650 RPM for the V12. Other changes include lower internal resistance, weaker exhaust brake, and higher RPM limit.
This is your excuse to find that rev limiter and enjoy the air cooled Deutz Diesel music.
- Automatic transmission may get stuck in a loop shifting up and down. This is because the very low torque and very short first gear cause the truck to lose too much speed during shifting, dropping below the downshift RPM; I've tried to tune this out, but it's difficult to find settings that work well with all transmissions. Manual shifting is very strongly recommended.
- Automatic transmission may fail to shift up even on a level road. This is hardcoded; upshifts won't happen if the power surplus is marginal. Once again, manual shifting is strongly recommended.
- I have not tested all engine-transmission combinations; feedback will be very much appreciated.
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1.0: initial release with torque curves based loosely on underground mining engines; 2 additional final drive ratios 1.1: update with more accurate torque curves for V10, V12; 3 additional final drive ratios for 9-speed, 4 for 12- and 13-speed transmissions 1.2: better throttle response; fixed typo in V10 description 1.3: fixed gear names for 9-speed 1.4: tweaked fuel consumption