In the Dynojet text the author mentions the PAIR valve that allmost all Hondas are equipped with. We removed it from a friends TL1000R (the valvepump and hoses was a hefty 1kg!!!) The TLR stopped banging in the exhaust...;-)
The PAIR valve push air in the exhaust to lean out the exhaustgas to make it "enviromental", a common trick thats used in the car business for years. It also fools the fullrangelambda from the Dynojetcomputer to think the bike is lean and then of course gives the wrong reading to lean the mixture even more...just mental instead of enviromental
The question; Does anybody know if the 1KRR got one?