[legitstreetcars]

Hey everyone, my name is Alex and recently I made a video on my YouTube channel on building a 40 MPG C5 Corvette that sacrifices nothing. Before my YouTube career, I was a long-time member here under Sprayed01. I daily drove a Chevy volt for 4 years, and before that I was ecomodding a Saturn SC2. I also just rebuilt a Tesla so I'm into a little bit of everything.

Anyway, if you watched that video I have another coming out this Saturday on how we tuned the car for lean burn. Check out the video but basically I have it running at about a 16.5 afr when just cruising on the highway at 60mph. We tested it on the dyno at a few different afrs and this was the best as far as it feeling totally normal. Too lean and you could tell it was down on power. We also raised the timing.

Here's my question. I want to give mileage results in most of the videos I make on the car since I'm going to be making changes and then testing. I need to figure out the easiest method of calculating mpg after each mod. Now I fully understand the way to go is filling up, driving until it's almost empty and then filling up at the same pump and calculating with the amount of fuel used. The problem is this car will get over 700 miles to a tank so I can't just take a mini road trip after each mod to see if we've made a difference.

Do you have any tips here and how accurate is the mpg display in the cluster? I know it's probably not perfect but what would be a minimum distance I could drive and be able to give a decently accurate result?

Ultimately I will highway cruise it for hundreds of miles on the highway after a few more mods to give everyone a final result but I need something in between.

Thanks, everyone!
Alex