Well, Im slowly putting together a NOS kit for my TPI car. Im looking for either a plate or a fogger nozzle to thred into the bellows. My question is whats the difference between WET and DRY? Is wet w/fuel and dry w/o? Im only gonna run a max of 75hp shot for now. My 145,XXX mile TPI is my daily driver and I will only be using it once in a great while. If anyone has some NOS parts laying around Im in the market. Thanks for the help

 

Hi...Im not sure if you know most of this but here's an easy way to think of things.... nitrous oxide "by itself" adds no aditional power....it's the extra oxygen in the nitrous that when introduced to the engine gives the ability to burn more fuel than normally thus giving the power increase....the power "all" comes from the burning of more fuel........As far as wet and dry kits....in simple terms, a Wet nitrous kit introduces "both" nitrous "and" enrichment fuel into the engine by the way of a "plate" or "single" fogger nozzle (8 nozzles on a direct cylinder kit), usually placed in the intake track downstream of the throttle body 6 to 12 inches away........and a dry nitrous kit, like you said "only" injects nitrous, usually at the same common location in the intake track, and the enrichment fuel is added by way of your existing fuel injectors.....this is achieved by a small amount of air pressure (aprox 45psi) from your nitrous bottle, bypassed from the bottle, then redirected to your existing fuel regulator with a vacuum hose...this added pressure tricks the stock regulator into increasing the fuel pressure to meet the requirements(more of a crude approach IMO)............Iv'e run both types (wet and dry) for many years, but most guys (including myself) prefer the wet kits for a couple reasons....One reason is the much easier, and way more accurate tuning of the very important nitrous to fuel ratio....this gets VERY dificult to do with a dry kit(especialy with a modified motor).....also, not putting the fuel injectors thru the extream added pressure spike that the dry kit exerts (most fuel injectors were never designed for this)..............With the dry kit and it's high pressure injector spike there's a much greater chance that even just one out of your eight injectors could lock up under the pressure spike or even fail completely (IME, this is fairly common with stock type injectors)......the stock regulator can also fail under the increased pressure.........both systems have their flaws and risks , but IME, the wet kit's just have less, and offer more tried and true tuning options......many companys have now come out with dry to wet conversions for existing dry nitrous kits.....but you don't see anyone switching from a wet kit to a dry kits.......good luck

 

How do like your woman? Go wet and don't think twice!

 

How do like your woman? Go wet and don't think twice!