This isnt my first dealing with nitrous.
Dry kits are a mistake, especially when dealing with small motor aplications. Say I went with a dry kit. I spray through a single nosel before the MAF. But the problem is the same amount of nitrous isnt going into each cylinder, less nitrous may be going into number 4 than say number 1 or 2 but the MAF is adjusting to increase the same amount of fuel into each cyl. So now you may have cyl 1 and 2 running a nice air fuel, but cyl 4 is running ritch.
So say I go direct port so that the same about of nitrous is going into each cyl. But witch a large amount like 150shot now my stock injectors cant handle the increase now i have to spend money on new injectors... and now im also not spraying through the MAF and i have to find another way to increase my fuel
With a wet kit. The right amount of fuel is delivered with the nitrous. No upgrade in injectors or worries about some cylinders being ritch or lean and others being even.
Dry kits are suposed to be the new technology in nitrous but IMO they are only safe up to what your stock fuel system can handle.