I have a 08 Honda Civic. I'm thinking about buying a scangauge (http://www.scangauge.com
) for monitoring my MPG. I have 2 questions-
1) This device attaches to the OBDII port. Where is that located? Am I going to void my warranty if I install this?
2) Is this device any good? I noticed that there was a group purchased planned for September 2007.