Quote:
Originally Posted by Piwoslaw
I remember Groar and Vekke once mentioning that pulse & glide at highway speeds (>90km/h) is not worth while. Of course, the gains are larger you have aeromods and if you glide with the engine off, but even then only up to a certain speed. I sometimes find myself PN(eutral)G-ing between 100 and 80 km/h, but that's mostly from habit. I don't think the gain is big enough to do it all the time, only if the terrain is slightly hilly.
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I would agree with the speed issue, the sweet spot in terms of MPG and distance of glide seems to be about 45-60 mph with a target of about 55. I sometimes have to keep a min of 55 to avoid annoying trucks but if I find one going slower (Morrisons supermarket in the UK have theirs limited to 50 or so I think) then I will just tuck in behind as I'm causing no more of an obstacle on a motorway than the truck on its own. Plus its more pleasant with no pressure, sit back and listen to the radio.
When I started P&G heavily I used to pulse very hard to around 80 at the start of my journey to glide for about a mile on the flat but analysing the avg before and after it seemed worse than just pulsing to 50 quickly and maintaining it on a gentle pedal and high gear for the same distance.