Quote:
Originally Posted by MichaelRTJ
I could see the benefit on a very short trip, or a relatively short on a cold winter day. But other than that, it doesn't seem to have any advantages.
|
IDK if this has come up in this thread, but a standard line here has been that a WAI reduces pumping losses. The ECU adjusts AFR, so the mix won't become lean as the warmer, thinner air gets pumped into the engine. But less mass of air means less fuel too... that means you get less fuel/air at a given throttle position. Therefore to accomplish the same power you open the throttleplate further, reducing the parasitic losses caused by the engine trying to suck air/fuel in past the throttle plate.
So the warmer the engine, the warmer the air, the better the reduction in pumping losses. Therefore, I'd guess short trips will not see a benefit, unless IAT climbs high, fast, somehow.
IDK if a WAI can help warmups... maybe?