Base AFR was 12.0:1. Due back on the dyno this week using the smallest nozzle. My plan is to use it for safety rather than outright power. I'll be running 14psi on a stock engine which is nearing the max safe boost using the stock HTV1900 on 98. I'm using my washer bottle as the tank and have not installed the additional solenoid due to my tank being well below the height of the injector. I was still a little concerned with the air rushing past the nozzle that it would syphon some of the water/meth through, but after driving for two weeks with the pump isolated there has been no loss of fluid from the tank. With the amount of blowby and oil in the intake I'm expecting lubricating the throttle body won't be required, but time will tell. Benny.