keep forgetting stuff..... I'm pulling 26mpg's City and Highway combined for the Z, driving conservatively. My daily commute is 80mi round trip, so I can test mpg every time I do to work. The extra instrument gauges are a full trip computer, oil pressure and battery charge gauge(doesn't matter for mpg, but someone asked). If I could get 28-30, I would be happy.
I also know a lot about HHO gas. Did that on my mustang. I can build a killer generator, but unless you're working on a non fuel injected vehicle, good luck
Also, can't find the button for me to join the sports car team.