Keep in mind we have some 30,000 automotive engineers here in Motor City - and a good many in Germany - busting their buts trying to get more horsepower and better fuel efficiency. They're recruited from the top schools...many of them are certified motorheads such as your and me. They go through Herculean efforts to squeeze out two more horsepower and tenths of a mile-per-gallon from their product.
I know these engineers sometimes make boneheaded decisions, but I can't believe they would collectively ignore a device that delivers such "wonderful" results.
Let common sense convince you that these are only "snake oil" products.
...same goes for Slick 50, Lube Guard, and a host of many other "miracle" products.
95 E320 Cabriolet, 131K