Yeah it's a wet system. I have spent the last week doing a sh!t load of research on NOS since the MCM boys stuck it in the s2000.
It's odd that the lines goes back to the tank though cause the mixing can pretty much happen right before it goes into the intake.

I would however advice you to do what Mike suggested and remove the T, best to get rid of any variables that don't need to be there.

The reason your img didn't work is because you have to end it with [/img]