Funny thing was I made peak power at 15 degrees of timing on all runs. No kr and to make sure we even disabled kr for a run and it still made peak power on 15 degrees of timing. Even running a smaller or larger pully. Anything above 15 degrees didn't lose power but also didn't gain any. Tuned it for a nice safe 11.5 afr. Was running 10.2 when I came in (I was trying to be safe)