[oil pan 4]

Originally Posted by pgfpro

I had a over lean condition from my lean burn system while tuning. The fuel vapor system was enable and I had a intake back fire that caused a explosion and took out my secondary fuel line. After this happen I removed the fuel vapor system and made a promise to myself never to go there again. The likelihood of a intake back fire is very high when running a fuel vapor system. This can kill you and anyone near the vehicle. So be very Careful!!!!!

I had something like that happen to me too. Just on the lean burn carb. I was driving along at pretty high speed working the gas to keep it real lean and it gave a nice intake pop. Even with the windows rolled up it made my ears ring.
Later I noticed the metal air cleaner didn't go back together quite the same as before. It was more like a nitrous pop.

Originally Posted by elhigh

I don't think 400mpg is even possible. That would require an energy consumption of less than 90 watt-hours per mile, less energy than is actually consumed in moving the air out of the way of the car.

Typical production electric vehicles see between 200 to 500 watt hours per mile, battery to wheel.

Want to roughly double the fuel milage on carbureted gasoline engine do what I did. Get a wide ban O2 meter and tune the carb for lean burn then EOC it for all its worth.

Want to get over 100mpg out of a car, just find the smallest car you can and put a little diesel engine in it. There is a metro with a Kubota diesel getting something like 90mpg in the city.

Use a wining combination, don't chase hot vapor carb unicorns.