so with with the help of a bunch of members on here thanks jpe and skeoop also mike fzr for the prop gauge over the week i installed a riva tstat, digital boost gauge, 4in bilge fan knock sensor update, rxp gauge cluster, and de pitched the 12/20 up to a 12/17 took it out today and from a stop wot i tap the limiter 2 to 3 times and hit 8200rpm at 3/4 throttle so it looks like i took to much pitch out what do you guys think i should shoot for 18 18.5 or 19 also boost is at 7.9-8.2 at 8200rpm thanks for all the help i can really feel the extra revs its awesome minus tapping the limiter so im thinking of going to a 18.5 or 19?