Is that 4th gear? I would've thought there would be more km/h near redline in 4th? Top of 3rd gets to 140-150.
Mid 12's were a bit lean yes....on the QLD run to Gympie I think I made 130rwkw on 7psi around 60% throttle and AFR's peaked around 19 **shock horror**. BUT - in saying that...the exhaust was not covered up to force all the gas through the tube so I don't know how accurate it is.
As far as the knock sensor goes...made 170rwkw first run...blew the knock sensor on that run...the 2nd run was with an engine check light and so made 120rwkw and was taken off the dyno. Wasn't a fun drive to Redland bay to pick up another one.