Up to 57-63 mpgs constantly. Atm Im having a small celebration( by myself). And am slightly intoxicated. but 93 Honda civic .... 1.6 L.... .280 mv added with the efie. about 1 lpm output. I dunno.... maybe its a fluke. I have a hard time believing what my results are but what can you do other than roll with it? :P So far so good and more than 100% increase