Breathe Easier

[AzBob_imp]

Most of the dyno charts I've seen for the stock bike have shown RWHP around 83-84 hp. Factory measurements are usually taken at the crank and you can expect a the loss of a few horses in the drive line.

Given that, low to mid 80s at the rear wheel are about what I would have expected to see with a factory claim of 88 at the crank.

The other thing that I've noticed while looking at the various charts that have been posted on the 'net is that opening up the exhaust and adding a PC shows pretty good gains across the powerband, with about 10 hp total at the top.

That's odd. That would make this bike's transmission and sprocket/chain system the most efficient on Earth (or Honda is lying about net HP). The drive train usually accounts for 10-15% loss from net (which would yield about 74-80hp, which is what the posted dyno results show). Net horsepower is always measured at the crank. The dyno results in this thread are the only I've seen, however, they are inline with what I would have expected. Who knows.