As title say I am running high boost 1.8T, puslar GTX3584rs gen3  at E100, ADR cams. I don't have any clue where to set ignition, car is making same power(around 900 hp) at 2.6 and 3 bar boost, also iginition ends (8000 rpm)  at 24° or 27° there is no change in power

I don't want to dyno car, it is allready at maximum so dyno runs maybe will kill it, it is for drag racing.
Engine is running great, make great powerband but I want to discus is there any chance to make more power. Do I need to go on lower ingnition angle at that high boost levels?  

When i played with flexfuel sensor i learned that on E85 i can add 12 degree in comparison to aral102 petrol to see the same ignition retard.

Why not rely on Knocksensors?

CR is 8:1

I don't have knock sensors, as I know on etanol engine can't knock

It is drag car, yes is running on E100, I didn't move to Brasil haha