Well you guys have pretty much outlined the current situation. I was in email contact w/ Ron over 2 months ago, and then he vanished. Not a good sign, I really hope he is OK. Ron has been a candle in a dark world.
Without real Gadgetman bits, you cannot cut the real Groove. People have tried to fake these unusual tools, with varying results. Until the bit situation is fixed, one could use all the "side tricks", as Dr Dude described. As far as fuel economy goes, it begins with vehicle condition/maintenance. Then mods can be added. In the end, it is then how it is operated.
An imperfect analogy to illustrate driving technique: Imagine if food tasted better according to how one eats it. As in the best tasting steak is when you are healthy, well-dressed, using proper manners, eating at a well-set table, having stimulating friendly conversation with folks you like.
Compare that mental image with a starving injured sick Caveman hurriedly trying to rip a chunk of burnt flesh off the carcass of a dead animal killed trying to flee the lava flow from the nearby rumbling volcano...

Who would you rather have dinner with?
Hang in there everyone. Real results come from thinking and learning. IF you want the famous Gadgetman Groove applied to your gasoline engine, I'm available to Groove by Mail.
Maybe if Mr Caveman had a properly tied necktie and pressed slacks...
Tracy G