Change History

I know I often make references to past cars I've owned, but another case in point is that both my Alfas, with mechanical fuel injection, had fuel cut-off solenoids. Adjusted properly, no fuel was used when decelerating completely off throttle. I'd would occasionally set the solenoid a little out so that I could get a pleasant burbling from the exhaust when not completely off throttle. An [i]idling[/i] engine is using fuel. It seems that modern fuel injected engines would do well to continue to have fuel cut-off rather than coasting idling. Perhaps eventually there will be auto stop-start while coasting.

An aside: doesn't the Sport Exhaust's off throttle crackling and popping indicate fuel usage?

I know I often make references to past cars I've owned, but another case in point is that both my Alfas, with mechanical fuel injection, had fuel cut-off solenoids. Adjusted properly, no fuel was used when decelerating completely off throttle. I'd would occasionally set the solenoid a little out so that I could get a pleasant burbling from the exhaust when not completely off throttle. An [i]idling[/i] engine is using fuel. It seems that modern fuel injected engines would do well to continue to have fuel cut-off rather than coasting idling. Perhaps eventually there will be auto stop-start while coasting.

An aside: doesn't the Sport Exhaust's off throttle crackling and popping indicate fuel usage?