This graph shows Part 3 of our multi part performance upgrade dyno series to document the massive gain of horsepower and torque in our 2005 Harley Davidson Duece demo bike. After removing the K&N 1499 replacement filter, Cycle Solutions Inc. installed their Jet Scream naked complete twin cam breather system. Back to back dyno tests on the same bike same day show an impressive gain an an otherwise stock Harley.