just wanted to query with other owners on 'knock' readings on the 1JZ...
at the moment my car is tuned on the richer side (10.50-1 AFR's) and still shows up around the 150+ mark on the 'knock' sensor readout on my SAFCII.....
when I run Nulon Pro-Strength octane booster it does relieve this to some degree (up to around the 100 mark)
My tuner says that all though there is no audible detonation it may be due to faulty knock sensors in the engine???