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My 2004 Breva 750 has 55,000 miles on the clock, 50,000 of which it has been breathing through a K&N air filter.<snip>As for performance, I have had the ECU reflashed for a 'richer' experience. Best $250 I ever spent, and I still get almost 60 mpg. At Wide Open Throttle the Breva performs very briskly, and even broke the ton one fine day. WOT is where the K&N gives just a little more airflow.
Jeeeez, and my 2013 V7 Stone has broken the ton a couple of times, pushing my not so small frame and some saddlebags through the wind.How in Gawd's name did it do that with a stock air filter and no-reflash????
My '09 V7 would break the ton even when stock. Although my weight probably wasn't stressing the engine like Kevin's was.
I remember reading a post that they had installed a K&N and it affected the performance to the point of needing a new map. Don't know year/model of V7.
Although i have a re-flashed bike, I put one in just for the serviceability factor. No more filters to buy. My Ducs all had one with no issues.No performance gain expected.
K&N filters must be good at something or they would not still be in business.
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