This is(was) my pre-compressor jet seat:
The compressor inlet is on the left bottem of the picture. In the engine bay, the whole thing actually turns 90 degree...
As can be seen, the jet is facing a half-open space. Even when no air is flowing, near half of the spray cone should hit the compressor directly, well, sort of. The spary cone is so wide that unavoidably hitting the wall.
Without significantly higher pressure, samller droplets, much narrower spray pattern & precisely injection angle, I think we can hardly get away with the damages. :sad:
As to close co-axial installed jet, in my car, it's almost impossible to deploy. :cry: