I've recoiled one of my 804s with a 1.4 ohm coil, using 32 kanthal. I also went to a smaller diameter coil, ~ 1/16 inch instead of 1/8 inch. I'm using it on my bolt at the moment and I'm really liking this. I was using 2.7 to 2.9 ohms and that was working great, but only on my yj. I'm not sure why it took me so long to try this, but now I'm going to try it in all my devices.
Also, as much as I like my yj, I don't think I'll be buying anything other than a mech from now on. The drop off in voltage just doesn't seem that noticeable to me, and I'm really lovin this 804 on my lowly bolt (18500). The only thing being, I can suck a mil of juice through this thing is a couple of hours easy lol.
Edit: When will I learn to test things more before posting lol. This isn't working at all on some on my mixes. I'm going up a notch (~1.7 ohm) and see if that works better.