How much timing are you using for high octane on a LT4?

[etxridn]

How much timing are you using for high octane table on a LT4 during boost?
I guess most common is 93 in US and 98 in EU.

[kenand1988]

on pump 93 probably not more than 20-22 up top.

[TriPinTaZ]

Depends on humidity and weather and if you have mods. Stock tuning, the ECU commands between 22-23.5 of peak timing on pump 93. It starts out much lower when going WOT in the lower RPM range.

[GHuggins]

Depends on humidity and weather and if you have mods. Stock tuning, the ECU commands between 22-23.5 of peak timing on pump 93. It starts out much lower when going WOT in the lower RPM range.

I screwed up on a humidity table Started out with stock settings and it added 3 degrees of timing to a slightly detuned tune that I was using to dial fueling back in after some more mods were made on a 22 ZL. Showed me roughly where this particular gentleman's peak timing was on the stock knock settings - right at 17 degrees ;/ I'm still letting it add some timing at full humidity levels (like 1 degree) - just not stock settings - teaches me