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Franks is fine....it's the butter that usually gets added to it to make Buffalo sauce that can be considered "bad".....depending on your current diet. For low carb, the butter is fine. I just don't go overboard with it.
When a quick cook like steaks or burgers....I get the fire going nice and hot, wait for all the VOC's(nasty smoke from the lump) to burn off, and throw a handful of chips on the hot coals right before I put my food on. I'll usually let the chips burn for a few minutes before putting my food on.
You can always mix a bunch of chips right in with your charcoal pile before lighting it too.