Waldo Report post Posted October 17, 2016 So there you go, two posts - science and non-science (or nonsense?). Grill covers are not necessary, and neither is pulsing and gliding (aka erratic driving). Actually the two posts are really both exactly the same. Pulse and glide and BSFC optimization are exactly the same thing. In fact the entire premise of a hybrid is to allow for "pulse and glide" without the speed variations. You pulse the engine by running the engine hard and using the extra energy to charge the battery, then you turn off the ICE and glide on the stored energy. If you're driving the hybrid with great level of attention you can further optimize the pulse and gliding and still nobody around you will notice. 1 ptjones reacted to this Quote Share this post Link to post Share on other sites