[John at J&S]

And then there are ignitions that do individual cylinder knock retard. Like mine.

Anyone here running it? Remember, when you adjust timing for "no knock" you are adjusting it to keep the worst cylinder quiet, robbing power from the rest. Yes, you can say my system doesn't make power but it allows you to safely extract more power from the engine.

Then there is the question of how are you determining there is no knock when you are setting it? By human ear alone? A good knock detection system is trying to detect knock that you CAN'T hear, while ignoring engine noise that you CAN hear.

Some tuners use knock headphones, some use a purpose built knock detector like the Phormula or the Gizmo K-Mon, but they are almost as much as my system and they do nothing but provide a warning if for some reason the engine starts knocking. Also, these systems are typically removed by the tuner after adjusting timing, leaving the engine at risk.

Sorry for going off topic, but modern aircooled engines have this feature, why not add it to the older ones. Because it doesn't say Bosch on the box?