Tried swapping cyl5 and cyc2 plugs and coils, still the same high knock on cyl 5 during wot pull in 3rd gear. Swapped cyl5 and cyl2 injectors with new seals and gaskets. Re-coded injectors. But still getting knocking on cyl 5 during 3rd gear wot pull. What else could be causing the knock? Do I need step 2 colder plugs instead of 1 step? Is my fuel rail crashing with E30? Is there a valve or other cylinder issue on 5? Good news is looks like still no injector leaking as AFRs go straight to max value and don't dance around anymore.

After cleaning injector tip and replacing seal and burning through a fuel tank of fuel injector cleaning and adding a new full tank of E30 mix. Does not appear to be leaking at end of this pull, but still lots of knock on cyl 5? What else could be causing this? Should I be concerned? Do I still need a new injector for 5?

V11 felt great!  Strong and amazing, but looks like cyl 5 had some bad knocking from 6k until the end of the pull.