Bronctopia
Well-known member
So, basically, by reverting to carb on an EFI evolved head YOU had to step in and become the knock sensor!The knock sensor is the best feature of the stock configuration
When you hear rattle, you reduce timing just as the ECU did, but indirectly by pulling the vacuum advance.
Unfortunately, the response lag is rather slow and cumbersome, as it involves pulling over to pop the hood (even more of a PITA when trailering!)
Maybe you could make the human process more time-responsive by adding some sort of vacuum modulating valve on the dash? Then you could pull and restore vacuum to the distributor with the turn of a needle?