Quote:
Originally Posted by Lapkritis
That's the smart way to do it... then no tuning of an aftermarket unit for sensitivity control.
Have you by chance had the opportunity to tune ignition on the dyno when the counter is registering hits? To eliminate phantom knock (engine noise) that may be falsely registered as true knock, you would need to use a dyno to locate MBT. If it's true knock then you would see the MBT plateau with no drop in power as a small amount of advance is removed from that area of the ignition reference table.
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Yes, that is how I set the ignition timing, but only for the wot map (I had already set the wot fuel map live on the road). In the end there wasn't much change from where I set timing based on monitoring knock in real world street conditions. Setting pt timing was a bit if a guess based on distribution across the table from a few "tuned" cells. There is probably more to be had at pt. I basically added more timing in the lower load cells and reduced timing in the upper load cells. Pt fuel tuning was done by recording afr values live in conjunction with recording the active map cell location followed by analysis of the data on a computer and then more refinement of map values. Took some time.