Here you go, what we all need to know, Riverbank Motorcycles just replied to me:
"...A 2000 FZS 600 will test around 0.30 gm/KM as standard. The quickest solution is to fit a small suitable catalytic converter into the exhaust system before the test, which would ensure a pass result. This catalytic converter will not effect your power in any way. The suitable cat would be £125, the fitting (approx.) £60 and test £175 making a total of £360. Any brand of fuel is fine, as long as it hasn't been sitting in the tank longer than 6 weeks maximum. Ggenerally when it's busy we have a 2 week lead time, you can book via the website."
"...A 2000 FZS 600 will test around 0.30 gm/KM as standard. The quickest solution is to fit a small suitable catalytic converter into the exhaust system before the test, which would ensure a pass result. This catalytic converter will not effect your power in any way. The suitable cat would be £125, the fitting (approx.) £60 and test £175 making a total of £360. Any brand of fuel is fine, as long as it hasn't been sitting in the tank longer than 6 weeks maximum. Ggenerally when it's busy we have a 2 week lead time, you can book via the website."
More people are born because of alcohol than will ever die from it.