Hey guys I've been running 1 kit of nitrous spraying a wet 150 shot and air fuel is at 12.4.

I have another nitrous kit and i was wondering what AFR should i have. Lets say the first kit spray 125 (wet) the 2nd kit spray another 125.

Or should i spray a dry kit on the 2nd one?

But im not sure on the air fuel what air fuel should i hit?