I am actually running it between the PCV and the air intake after the throttle body but before the last sensor on a 4 cylinder Dodge Neon it seems to have a whole lot more power but really havent tested the mpg yet plan to tommorrow also how do I test the LPM's? And at 12amps my unit is only getting warm not hot using baking soda and a tad of White Vinegar for electrolyte. Also my unit is laying on the AC line which is helping the unit stay cool.