Rebuilding the coils with cotton will increase the flavor for you. If you aren't comfortable with rebuilding then get
juice that is just as high a PG blend as you can get. You'll sacrifice vapor, but the flavor will be much better.
You could also try getting a cheap VV or VW device and crank up the power which will vaporise more juice more quickly resulting in more flavor, or a burnt taste. lol
You have to find where you like it before it's too much for your coils but once you do, you'll never go back to small batteries.