somewhere i have it but i dont remember where i put it!! Bursi Evolution does the hard work at eprom and Dyno
and at low rpm you lose some ready at your throttle response, maybe not so much appreciable the difference when you rinding, but you see it on a dyno
not with 45mm manifold if you put 57mm full, yep with big bore exhaust you need modify the heads and put cams more perfomanced... wihout these, your bike work bad
i have put dyno chart if you are interested 235 km/h (termignoni) vs 263 km/h (akrapovic)... ONLY EXHAUST (NO CAMS, NO PISTONS HC, NO BIG AIR DUCTS)