Sorry man, but if you can already taste a big difference when there’s just a small amount of juice left in than just refill the tank.
The only time I ever burned my coils was when I forgot to refill the pod. Like, I’d be watching a movie, take a puff, and it tastes like dry cotton... but my juice bottle’s somewhere across the house, and I don’t feel like pausing the movie. A few minutes later I forgot about dry cotton taste.. taking another puff, and boom..burnt cotton and metal taste right in my mouth.
With this pod, I’m sure that’s never going to happen again.. and honestly, that’s all I need.
I can always just use my eyes to see how much juice is left in the tank, but with a DNA chip, I don’t even have to worry about it. No matter how little juice is left, it'll never taste burnt.