I love peltiers, I used one as a heat exchanger on my brother's 944 Turbo on the induction system and transferred the heat to the fuel rail, creating a fuel war

I love peltiers, I used one as a heat exchanger on my brother's 944 Turbo on the induction system and transferred the heat to the fuel rail, creating a fuel warmer. Result was he set the engine management system (motec) to run the fuel system richer, as the fuel that was more ready to combust (as a result of the heat) and given the air going into the turbocharger was colder (more dense) there was more air to react. That being said - we never got the opportunity to test if there was any actual horsepower gain, but he used to suggest that there was. Now as for LED's in the shower, that might not be as silly as it sounds. Imagine if the tiles on the floor were semi transparent (I'd suggest some kind of translucent polycarbonate) and lit up like a disco floor for those people who love to sing in the shower.