Thank YOU for the compliment. Yes, it's all a constant refinement game. The cold winter showed me some flaws in my technique, and I refined them. Now, with warmer weather, I'm doing even better. Details like starting the pulse just before an uphill, and pulsing partway up, and the coasting up and over the crest. The uphill gives you more load, and makes it easier to hit that peak BSFC point. Then the downhill is free.
And it IS fun!
The vaccuum gauge is correct if you're applying it to steady-state cruising. Which is not one of the "70% or off" options. But in it's place, it is useful.
The grill block is more for faster warmup than it is for aerodynamics. My normal driving doesn't go over 55mph speed limit, so I'm not even going that fast.