01 z28 pinging at wot

[spike]

after the tune, which is awsum, it pings at wide open throttle some. sometimes quite a bit. even with 93 octane. all fuel around here has 10%eth in it though.
problems or a fix?

should i richen the performance tune of retard the wide open performance tune? if so by which percent?

[mikel]

Yes, try adding some fuel in the range where you are seeing KR.
You may need to pull a bit of timing as well.

Thanks