I was going to inject the H2O2 into the intake tract. First it would cool the charge air, then when the piston came up, I believe the heat will cause it to disassociate (turn to steam) and increase cylinder pressure a great amount drop EGT's compared to fueling at same HP, increase boost, and improve piston and turbo life.
Not sure if it will react by heat alone, or how much heat it would take, or whether the reaction would be fast enough.