Good points made @
Anthony. I don't have one...may not have the patience to build one haha. Again, FWIW, from Wed to Sun (pre-tune), I've been hammering my FR-S to provide a shop feedback of their alignment capabilities. Two thumbs up there! More grip/bite less screech. After the tune (Sunday) I continue to hammer my car and this tune has definitely been felt 2nd gear 3500 rpm and beyond. For the money paid and ease of possession, I couldn't be happier with my 2 recent mods. Well, maybe trying this 1.1 version with an even lower rpm gains. New day tomorrow...