Keen to know this also, I think there is at least one person as they commented on the heat difference.
I've got just the end cans with the Akra map. I had them fitted at the dealer so haven't experienced it as standard. It still gets hot in traffic, and I've also got the comfort seat fitted. Though it hasn't caused me any issues as it's a sunny Sunday bike for me. I am contemplating fitting the baffles, as it is 'kin loud, but unsure if it will affect the fuelling. Only one way to find out I guess...
I have full system, DB killer in improves noise, no change to fuel consumption. 50 mpg on motorway, average speed 90mph and 130 miles to fuel light. It has made no difference to heat. Still runs hot in traffic 105C, ventilated leathers no problems at all. Standard seat.
