Back in the v block engine days they had an extra shield over the headers and a vacuum operated valve in he ait cleaner housing that allows the engine to suck air off the headers when its cold.
From driving the gen 2, I see it loves cold humid air for better performance. For fuel economy on short trips o ten miles or so warm air does better, but thats once its up to temp like mentioned here.
When I was unemployed and making 2-3 mile trips earlier this year I got 26 mpg.
I know those say heating the air doesnt make sense, but most diesels do it and many keep the heater burning for up to a minute after the vehicle cranks. Some of the diesels even go as far as to keep the alternator off for a minute to prevent from loading up the engine too much at first.
|