No these things are not jokes. These guys are very serious in their beliefs. I convinced a friend that I could reroute the tubing for the fuel/air heat oxidizer and apply some DC booster current directly to the coil and it would increase both power and mileage. I fiddled around under the hood with a few hoses and wires for a few minutes and it worked. He actually believed he has more power and better mileage. Try it on someone, it really works. Of course to be fair tell the truth in few days.

I call it the clean car syndrome. A clean freshly washed and waxed car always runs down the road real smooth no matter it's condition.