KHL Group Log In We have recently updated our website and if this your first time logging in this year you will need to set a new password. Please click here to begin. Using e-mail Log In We have recently updated our website and if this your first time logging in this year you will need to set a new password. Please click here to begin. Using e-mail By Leila Steed01 April 2021 Engine manufacturer Cummins has upgraded its Stage V B6.7 engine with Stop-Start capability, which means the model now uses 10% less fuel than its previous versions. The Stage V B6.7 Performance Series engine is said to improve the performance of machines that need higher-speed power delivery with low-end torque capability.