I have the 2d come on at 5psi. For my driving style, it works good
I use the aquamist 1.0mm nozzle. With the stock intercooler, I actually drilled and tapped the intercooler just before the outlet to the throttle body. Made 292 whp on a mustang dyno on 92 octane pump gas. Seems to work very well. Now with a FMIC I dyno'ed 329whp still with pump gas. I have been very happy with my results