77 dyno tests, test both original and an ECU with breakin mode removed, tested in 30 degree dry air
2015 Polaris 800HO engine 2015 Polaris Axys with the new engine
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Yamaha Viper Excell exhaust and intake improvements
compare bone stock to lower backpressure muffler, and tuned airbox with outside air intake
Etec 800 D&D trail port Compare stock reeds vs Boyesen Rad Valves
also airflow/ HP improvements with preproduction Boyesen Viton sealed/ dampened/ insulated Rage Cages!