You just need to change the jet in the nozzle is all. No big deal at all. My system only goes down to 150 and that's a #63 jet (#71 fuel, but you don't have to worry about fuel with a dry system). I can't tell you "Get this # jet, and go" cuz it doesn't work that way. It depends on your system, which I'm not familiar with. Call N.O.S. tech department, they'll tell you exactly what you need. 714-546-0592.
