janis,
I took that picture by a Canon digital camera, with the built-in flash light & close up mode.
With the turbo in car, it's very hard to get a good angle, I just guessed & saw what I got.
Richard,
How narrow spray pattern you can get with a fine enough droplet?
At the elbow near inlet, I think maybe it's more easily to aim the target, like this:
Or in a straight pipe, the co-axial nozzle is more difficult to install. However, the air flow would probably tilt the water injection pattern near the turn.