I run a silber turbo on my 2008 163" dragon
74 weights in minesota 5-6psi 8350 rpm
68 at 7-10k in montana. 7-8psi 8400rpm 72mph
I run put 6 gallons of Av100ll in each tank of pump gas for piece of mind.
Justin Silber set mine up himself both here in grand rapids and out in west...