All of the problems I’ve read about the modman intake seem to revolve around that intake being used with carbs and wet flow. I don’t think that is your problem. I do think the g3 hemi is sensitive to timing but I think most out of the box ignition maps are extremely conservative. Looking at your map, and pulling from my little brain having tuned a variety of different engines, you’re going to end up with considerably more cruise timing at low loads, and a couple to a few more degrees throughout WOT with a 1-3 degree dip around the tq peak. If it were mine, or I was tuning it, my absolute first step would be to wire up a functional knock sensor. Listening for detonation will end with shattered pistons. Then I would dump some 91 in it and press up against the knock threshold, and back it down 1-2 degrees. Then go after mpg in the low load areas of the map. After that you could create an 87 octane map (-30%) and put it on one of your switchable ignition tables. Without a knock sensor or being on a dyno there is really no way to know how safe or dangerous the tune is or what the engine actually wants. That’s just how I’d do it.
