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Tech 101: A Video Introduction to Nitrous Oxide Systems

Learn the differences between various types of nitrous oxide systems by watching this Summit Racing Quick Flicks video.

This video will answer some frequently asked questions, and highlight the differences between wet, dry, direct-port, and plate nitrous systems.

On this installment of Summit Racing Quick Flicks we are going to talk about the basics of nitrous systems.

Now, we get a lot of questions regarding wet nitrous systems, dry nitrous systems, fogger systems, direct port systems, plate systems and what the difference is between all these different types of set ups so we will start by talking about wet nitrous systems vs. dry nitrous systems—the two main types of nitrous systems out there. Wet nitrous systems come with their own fuel components which allow you to introduce more fuel to your intake charge and increase horsepower that way. Dry nitrous systems, on the other hand, don’t come with fuel components and actually utilize your factory or existing fuel system components. And they will actually alter your factory fuel curve or they will drum or fuel out your injectors by creating more impulses from the nitrous solenoid. Dry nitrous systems are generally easier to set up between the two simply because you don’t have the added fuel components to install. Now let’s move on and talk about the different delivery methods for nitrous and this is where you get into plate systems versus direct port systems versus fogger systems. So first let’s start with the plate type systems. With a plate type nitrous system you essentially have a bar—a spray bar that’s mounted on a square plate and this plate mounts either between your carburetor and intake manifold or your throttle body and intake and injects the nitrous into the incoming air stream. For a direct port system, nitrous is actually injected into each individual engine cylinder through individual injectors. Plate systems are generally the easier of the two to install. The direct port systems are more accurate there is better distribution of the nitrous and therefore they are more powerful, however, they are usually more expensive and much more difficult to install than a plate system. Taking it one step further you also have fogger systems which kind of work off the direct port system. These essentially atomize the fuel a little more finely so you get just a little more horsepower for your dollar off of this. Now if you have more questions about nitrous systems or any other high performance related topic please feel free to leave a question in the comment section below.

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  1. How much of a power difference is there to be gained from going from a plate to a fogger system

    • OnAllCylinders says:

      This is one of those “Well, that depends” questions. Not all plates are the same. For example, there are 2 stage plate systems offered by Nitrous Express now that will make some big power. Today, it is more a question of choice and ease of installation. Obviously the plate is easier to install but, your hood clearance will suffer if that’s a concern. Drilling, tapping and possibly welding a manifold for fogger nozzles most times will change people’s minds pretty quick about a fogger system. But, if it is a real high power motor naturally aspirated, and having a balanced motor is of utmost importance, then a fogger is the way to go as it delivers the same amount of fuel/NO2 to each cylinder! No worries about distribution problems across the plenum of the manifold.

  2. I have a single stage fogger system I want to add a plate system for a second stage. Was thinking leaving on the plate and bringing in the fogger a few tenths out. What would be the pros and cons with this set up?

  3. I see some talk about the safety features that the “soft plum” fogger delievers. i would like to know the details about the different fogger types and pros and cons.

  4. I have a zex nitrous wet kit for a 94 mustang cobra. The kit will not turn on. Please help. Thanks

    • OnAllCylinders says:

      Jon, we’d suggest you call the Summit tech line at 330-630-0240. They will have some more questions to get your problem figured out.

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