If your running .98's on cruise and .78's on WOT thats not that much of a difference to PULP, in AFR terms he is running about 11.466 on WOT, some people like to tune their cars to that with PULP. (my 363rwkw tune was at 11.1 afr)
and thats about 14.4 afr on cruise.... Thats not a huge difference at all, and would bring major benifits to fuel economy.
This sounds interesting... should go for a 20 or 30 % mix could we mix the stuff ourselfs?