The air filter is DNA. K&N could not supply. Powerflow is a local exhaust manufacturing company ( mainly motor cars ) They do not mass produce pipes for bikes. Mine was a hand made once off deal for which i had to lay out R2500 ( compared to nearly R10 000 for the Arrow if imported) The carb settings was done by the chaps doing the Dyno. It is standard procedure of just setting the carbs to the optimum air/fuel ratios. nothing fancy like jet kits ect. I used a soldering iron to make the holes as not to get shavings from drilling into the carbs
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