If I understand this correctly. In a dry system you spray Nos across the maf sensor and it enters the plenum,the computer adjusts the fuel to compensate for the cold gas.The wet system just dumps fuel and NOS into the plenum at a 50/50 mix.Obviously you want to be at wide open throttle for either system.
The Dry system sounds safer but I wonder if it will work very good.Any input would be very helpful.Thanks