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26 is fine would guess that its a spike . change the screen monitor to 2 and choose knock and rpm then change the screen image to graph.take the car a run and find a safe place to boot it in third or fourth.the graph will give you a 10 second window.you will see where in the rev range that the spike occurs.mine is in the twenties on a hard pull and occassionally 30's.the built in warning of a flashing cel does not start till 60.car is 320 atw.would guess the peak noise to be somewhere between 4500-5500 rpm about where peak torque is.
 

· Premium Member
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9,439 Posts
quite agree mate knock can come anywhere.when i first got my car it had knock from just of idle right through the rev range.i'm assuming the car has been mapped in which case the area i would expect to see a slightly higher knock level would be on a full power run through the peak torque zone.
 
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