https://docs.emtronaustralia.com.au/transmission-control/tuning/engine-torque/index.htmlImportant Accurate engine torque modelling is critical for transmission performance. Engine Inertia Engine inertia is used to calculate the clutch torque required to sync the engine speed during a shift. It also informs the rev-match torque calculation. Engine / configuration Typical Inertia (kg·m²) Small 4-cyl light flywheel 0.12 – 0.20 Typical 4-cyl production 0.18 – 0.28 Performance 6-cyl (light flywheel) 0.20 – 0.32 Heavier 6-cyl / street flywheel 0.28 – 0.40 Big heavy flywheel / truck 0.40 – 0.70+Hugoen-us