Hey! Sorry to revive this old thread, I can't get this to work. Do I also need to put extended-2 in the engine.ini? " RESPONSE_TIME = 0.03 ;response delay in seconds MECHANICAL_EFFICIENCY = 0.85 ; % / 100 - should match "transmission losses" multiplier IDLE_THROTTLE = 0.04 ; % / 100 - how much throttle is used to reach idle IDLE_CUTOFF = 1800 ; revs at which the throttle ceases to idle " Where do I put these in the engine.ini exactly? Anywhere will do or under a specific section? And do I need to enable an option in CSP to activate this? Will this both change the car's fuel consumption, as well as the AI's fuel management? Thanks Edit: I tried enabling the LOG_FUEL_FLOW = 1, but I see nothing in the custom_shaders_patch.log.