I just drove the car after putting the air cleaner on. It was running PIG rich in gear! It was dropping in the 11.0 range but it was still pinging. Huh? I expected the addition of the air cleaner to richen it up some, but now it looks like I'll have to go back at least 4 jet sizes to get close. I'm amazed though that it still pinged. I would think that an over-rich condition would have stopped that by a longshot. I'm going to pull a plug and check the cranking compression. Before the cam swap, I was at 185-192. This cam has a later intake closing, so I really expected it to reduce cylinder pressure so it would NOT detonate given the same tune as with the '509 cam.
