"That Was flash here in quebec (fuel map untouched with the remap) and fuel mpg was very worse ( 145 km for 11 liter (30 mpg) vs stock 220 km (47 mpg), the only thing i see that can cause this problem is that the pair valve was desactivate and the exhaust was stock?"
Immer wieder lustig, was manchen einfällt. Ergebnis: Yamaha kann's doch am besten.