So my uncle's brother increased his fuel economy by 150 miles per tank by using hydrogen injection through electrolysis. Also allowed him to run more boost without risk of detonation. His afr is ridiculously lean. Simple to make too. I'm looking into it and after seeing how many prototypes he had I have a fairly good idea of how to try it.

Wondering if anyone else has heard of this?

I might just do a custom meth kit but I want to try this first since meth won't help mpg.

However I got 402 miles on my tank today doing 95% highway from RI to NY to NJ back to NY and back home. The light came on for low fuel as I was pulling into shell. How big is our tank?