you will see results if you can crank up the timing advance while the water injection is active ... otherwise you are just lowering EGT temps and steam cleaning the engine ... not a bad thing.

installing a potentiometer on the intake air temp sensor with a relay that only uses the adjusted signal when the water injection is active is one way to achieve this ... i know there has been at least one SRT-6 owner that has done this as he is deep in the 12s ... for us N/A guys we're looking at a very small gain but good none the less.