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Old 03-12-2003, 01:53 PM
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With a properly implemented water/methanol injection system, you should be able to arrive at maximuum power AFR and MBT without ever experiencing knock.

I tune without water injection to the threshhold of knock and then pull back a bit to find my base tune that I revert to in the case of a WI system fault.

Generally I only monitor for knock during tuning - I use this:

http://home.netcom.com/~bsundahl/kno...nockSounds.htm

And the DIY knock cans:

http://home.netcom.com/~bsundahl/kno...ten/listen.htm

I attach this to my tuning computer while tuning.

Of course I am relying on my ECU's knock sensing / timing retard response if I cross the edge somehow.
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