The ec is high by a factor of 2 for chiles, Ph is ok

Get accurate/calibrated meters to measure ec and Ph.

Are you saying that my ec should be .8?

1.6 divided by two is pretty close to 0.8...........

An EC of 0.8 is fine for vegetative growth, and 1.6 is okay for generative (i.e. flowering) growth - both are within acceptable ranges. There is no one best way to grow these peppers, and it is difficult to give specific advice since you haven't provided more details about your system.

Regarding the heat level of the chiles, I usually do two things: (1) using a flood-and-drain table, I flood the media less frequently (allowing the media to dry out more), (2) I add extra sulfur to the nutrient solution. Sulfur concentration has been linked to both chile flavor and heat.

Best of luck!