I know this is old news but I am trying to decide whats best to beat the heat on my 07 ultra. I am planning on installing fuel management system just trying to decide which one. I have already installed V&H slip ons, oil cooler, stage 1 and syn 3. Helped a little but still hot so I guess I am forced to spend the $$ on a fuel maagement system. Any thoughts on which is best and should I still get aftermarket O2 repalcements are can I leave the OEM ?