knock level reading zero??
I just found this so will try this and see what happens: 
'There’s one last setting for those with the SAFC-II, the knock sensor. First off press left or back to the main menu and select “Monitor”. On the next screen select 1 channel, press down until “Rev” is selected, and then next. It should display a nice engine revolution display. Start the car and let it idle. The display should match your tachometer exactly. Rev it slightly to make sure. If it doesn’t you need to change your cylinder setting, see the troubleshooting section at the end. Do not try to setup the knock sensor until the revolutions match or the knock sensor will not be setup correctly. Once you have verified it is correct press back to the main menu, and select settings. Select “Knk Set” and press right or next. The car needs to be running, which it should be because you just verified the revolutions, right? Good. Move the cursor to the “1: 0” line. Next to it you will see it says “1500”. Press the gas and try to hold the tachometer to a value between 1300 and 1700 RPMs. You should see your revs as the top number. Once you have it steady press right or next once. It will put a number in place of the 0 so it will read something like “1: 26”. Now move down to the “2: 0” line and do the same with the tach between 3200 and 3700. It will enter a number in again like “2: 38”. You’ve now calibrated the SAFC-II with your knock sensor. Press the left or back button once.'
'There’s one last setting for those with the SAFC-II, the knock sensor. First off press left or back to the main menu and select “Monitor”. On the next screen select 1 channel, press down until “Rev” is selected, and then next. It should display a nice engine revolution display. Start the car and let it idle. The display should match your tachometer exactly. Rev it slightly to make sure. If it doesn’t you need to change your cylinder setting, see the troubleshooting section at the end. Do not try to setup the knock sensor until the revolutions match or the knock sensor will not be setup correctly. Once you have verified it is correct press back to the main menu, and select settings. Select “Knk Set” and press right or next. The car needs to be running, which it should be because you just verified the revolutions, right? Good. Move the cursor to the “1: 0” line. Next to it you will see it says “1500”. Press the gas and try to hold the tachometer to a value between 1300 and 1700 RPMs. You should see your revs as the top number. Once you have it steady press right or next once. It will put a number in place of the 0 so it will read something like “1: 26”. Now move down to the “2: 0” line and do the same with the tach between 3200 and 3700. It will enter a number in again like “2: 38”. You’ve now calibrated the SAFC-II with your knock sensor. Press the left or back button once.'
