i run just like that. I Y my head lines together so i only use one pisser for the motor, and i have a flow control thermostat after my exhaust cooling to slow the water down and get the pipe hot. With my pipe my stinger is closed off so it only gets water from the headpipe. The exhaust has a pisser for it so i can watch my motor and exhaust cooling circuits while i ride.
I know people get worried about a plugged line, but the chances of that happening are slim if you dont beach, and fine sand will get blown through the system and out with the PSI the pump puts out. and you can see it while riding, if it plugs shut it down. I like cold water into the pipe, it seems to make more HP.