I just received my "energy wheel" module and had to stop everything to got shoot it.

I shot a few shots with my bow at it's current settings to get loosened up a bit and to imprint the feel of the FDC. It hits peak early, holds it then drops off quickly to the wall. Here's what I found-

FDC- I then installed the E module, and stepped closer to the target, just in case I drew, and as soon as I hit peak the bow jumped back to full draw. I was so used to really pulling through to the wall that when the bow dropped of with the new mod, I was using a bit more effort than necessary. I let down and drew again, this time really concentrating. Bow easily feels a good 5# lighter in draw weight, just from a perceived effort stand point. It still hit's peak fairly early, but immediately gradually and effortlessly drops to the wall. I really enjoyed the FDC, much preferred over the previous mod.

Shooting- At full draw, the valley is more than adequate, but due to the less aggressive FDC, there is no tendency for the bow to take off when I crept a little bit, just to see what would happen. Subsequently, the release is really smooth, and the bow now has less recoil than the little bit it still had after all my previous modifications. I shot several times, and was really happy with how the bow drew, aimed and reacted at release.

Performance- My chrony needs new batteries and the lighting rig I had for shooting indoors is out of whack, so I didn't get to fling any through the chrony. It only makes sense that since the mod is storing less energy, I would lose some terminal performance. Diamond says the E mod yields 93% of the regular mods performance, and with the old mod I was shooting 278 fps. Applying there math, I should be now getting 259. However, my bow was previously sighted dead on at 25 yards, and my point of impact hasn't noticeably changed. Some day soon I hope to get my chrony set back up to do some testing, but for now I'm satisfied. I still have enough energy to get the job done, and if I want to get more performance, I can crank my bow back up. That's what I want to test, to see what the perceived effort is for identical terminal velocity.

All in all, I think this mod will stay on my bow. Time will tell.