I went out a played with the tune a bit. I changed to the pink and purple springs (it was orange and purple before). I noticed I was barely really getting to 36 all in at 2500 so I went ahead and opened the slots for 2 more degrees all in. Now I actually get to 40 all in at about 1500, maybe even a tad earlier. Took it out and no pinging at all. I hammered it a bunch of times and it makes no valve noise at all. I even upped the initial 2 degrees and it still doesn't ping. I don't see any real noticeable difference in the timing changes. Damndest thing I have ever seen! Never seen a car that won't ping when timing is advanced up.