06-05-12, 02:56 PM
Can you post up the dyno print out? I was once told mine was running weak but he had his air fuel ratio line (known as stoichiometric ratio) set at 13.7 to 1 and it should be 14.7 to 1.
Any mixture less than 14.7 to 1 is considered to be a rich mixture; any more than 14.7 to 1 is a lean mixture.
129 bhp is not that bad, but a better can may help. On the same Dyno mine was 121 as standard, 125 with Ivan's jet kit/Quill T3 and 135 with the full monty, 4 degree ignition advancer and an Akrapovic Race can. it made 132 with a Quill T3 full road legal can.
How many miles has your bike done, when was it last serviced / plugs changed / EXUP serviced / carbs balanced etc etc.
Different Dynos on Different days with different weather and especially different operators can make a big difference. 5% inaccuracy can mean 6 or 7 bhp either way.
I will pop it on the same Dyno, but it is years later, when I have fitted my full Akrapovic system (thanks Spluter) to see what is occurring.
Any mixture less than 14.7 to 1 is considered to be a rich mixture; any more than 14.7 to 1 is a lean mixture.
129 bhp is not that bad, but a better can may help. On the same Dyno mine was 121 as standard, 125 with Ivan's jet kit/Quill T3 and 135 with the full monty, 4 degree ignition advancer and an Akrapovic Race can. it made 132 with a Quill T3 full road legal can.
How many miles has your bike done, when was it last serviced / plugs changed / EXUP serviced / carbs balanced etc etc.
Different Dynos on Different days with different weather and especially different operators can make a big difference. 5% inaccuracy can mean 6 or 7 bhp either way.
I will pop it on the same Dyno, but it is years later, when I have fitted my full Akrapovic system (thanks Spluter) to see what is occurring.