View Single Post
Old 01-06-2020, 08:34 PM   #70 (permalink)
Ecomodding amateur
M_a_t_t's Avatar
Join Date: Nov 2015
Location: Indiana
Posts: 214

The Van - '95 Chevy Astro Cl
Team Chevy
90 day: 16.39 mpg (US)

The new bike - '17 Kawasaki Versys X 300 abs
90 day: 51.71 mpg (US)

The Mercury - '95 Mercury Tracer Trio
Team Ford
90 day: 34.33 mpg (US)
Thanks: 27
Thanked 66 Times in 48 Posts
I think I got lean burn figured out. I just adjusted it until it stayed between 16.5 and 17:1 (the suggested afr values) while cruising. I am having an issue, and I haven't driven enough to find the cause, where after awhile the car just basically quits trying. It doesn't die, but it loses all power and goes lean past 19:1 (gauge limit). Whats interesting though is if I flip the switch back and go into dfco then give it some gas, like to get back up to speed or even just a little, I can flip it back to lean and it repeats from there. It did increase my instant mileage by about 5 mpg (up to 45) at 55-60. MPGuino isn't calibrated yet though so hopefully that number goes up as I finish calibration. I know the best the MPGuino has shown on my trip to work was just a hair past 36, so hopefully tomorrow I will know if/how much lean burn has helped.

I also had my first problem with the alternator delete. I did a lot (~50 miles) of testing with the lean burn going back and forth down a low traffic road with a high enough speed limit and completely spaced how much range I had. I'm not sure I even had a full charge when I left this morning. Well I pulled over and turned the car off to reset the mpguino and I was going to do a non lean burn and a lean burn run to make sure I was getting useable fuel economy and I went to restart the car and nothing..... Got out and checked and it was at 11v I had to get a jump start and then drove the car home a few miles and plugged it in.
At 55 mph, a 10% drag reduction translates to a 5% increase in fuel economy. At 70mph,a 10% drag reduction translates into a 6% increase -Phil Knox (Aerohead), Aerodynamics Seminar #2
Originally Posted by M_a_t_t View Post
My other hobbies have no ROI (making things go fast). So I'm having fun modding my car for better mileage and the side effect is that I save money on gas day to day.
  Reply With Quote