I had a great day today.
My wife and I decided to go for a nice drive and get a base fuel-log.
I spent about 8 hours worth of tuning my city and freeway driving in the last month. So I decided its time to see where were at. (Neptune engine management)
After a 144mile trip with about 15 miles of it in town we got 44.5mpg.
This was with a temperature of 81*F and about a 85*F increase as the day went on.
I'm running a 15.5 A/F ratio at 65 mph. My next plan is to lean it out a little more to around 16.5. Plus I'm going to add a little more timing to help with the power.
How lean are you guys with Honda engines running at freeway speed?
Edit I forgot to mention that this was on 10%ethanol premium pump fuel.
Also this is a turbo-charge engine with a 8.5 compression ratio.