(approx) 4 Hours
Mechanical expertise or professional installation required.
The Zex Wet Injected Nitrous System is for '86 to '04 V8's, and it's gonna be something that you should check out. If you are looking for affordable horse power hands from an easy to install complete nitrous kit that gives you a range of 75 to 125 horsepower jets for a stock or mildly modified car. This is designed to work with the stock fuel rails and the stock fuel system, so if you already have a lot of modifications you should really consider a fuel pump upgrade here because you are gonna wanna make sure that you are not gonna be starving your engine of fuel while you spraying.A lot of people say that nitrous offers you the best bang for your buck. If you are looking for a big horsepower increase there are a few different ways you can go with nitrous. This particular kit comes with 75, 100 and 125 jets. It's throttle position sensor activated and it's a wet system.This is a very comprehensive kit that comes with everything that you are gonna need for an easy, clean, and straight forward install that's well done with no corners cut. Gonna call this install a two out of three wrench in the difficulty meter since you do need some basic wiring knowledge to get it done. You can plan on spending about half a day in the garage.Before we really look at the specific kit further, I can start with a basic overview of a wet versus dry nitrous system just so you can make sure that a wet system like this one is gonna be the right choice for you. A wet nitrous system gets its fuel from a connection to the engines fuel system, in this case, it's gonna be the stock fuel rail. The fuel supply is directly fed to the nitrous nozzle. Now a dry nitrous system, on the other hand, injects the enrichment fuel or the additional fuel that you are gonna need to burn the extra oxygen that the nitrous is gonna give you through the engines own fuel injectors, not the nitrous nozzle. So looking at your jetting options right away with these kits since that's one of the main concerns here. This kit is gonna include 75 100 and 125 shot jets so you do a few different options when it comes to the jets but just so you know you can't go any lower than a 75 shot with this kit.Now if you are actually looking for something a little more than a 125 shot there are some other options like either of the nitrous express kits. Those options are gonna give you a 150 shot option. One thing that is different about this kit is that it includes a nitrous management unit. So the wet system connects to the fuel system and controls the amount of both fuel and nitrous through the management unit. Zex does this because they say that it helps to control the fuel atomization and ultimately the power that you are gonna gain. What's really nice about this is that the major components of this kit like the solenoid and the electronic throttle switch are contained in one enclosure which makes for a plug and play install. This means that you won't need a mounting bracket or you won't have to adjust the placement of your switch in order to make it work right since you won't be using a throttle arm activated micro switch. The way that this system works is through active fuel control that will automatically adjust to the nitrous fuel enrichment with bottle pressure. This is gonna help keep things safe when you are running nitrous and it's gonna give a little more engine protection.Now this system activates at wide open throttle, so the system is going to monitor the TPS voltage to make sure the nitrous is going to be introduced at the right time. You will have one wire that clips on to the TPS output voltage wire, and this is gonna read your TPS voltage signal and send it to a programmable electronic switch that then engages and disengages the system based off a predetermined voltage threshold. And when talking about fuel atomization, this system has an injector nozzle with a little bit of a different design. Two features of this nozzle are its fuel transfer tube and the fact that it's self-adjusting in a sense. The fuel transfer tube injects the enrichment fuel directly into the outer edge of the nitrous plume. The nitrous gas shields the fuel away from the tube atomizing it into a finer degree than other designs can. This technology helps with fuel distribution from cylinder to cylinder and ultimately offers a better engine protection. The transfer tube is also self-adjusting and meaning that it self-adjusts to the bottle pressure. The way that it works is that a vacuum is created as the nitrous is sprayed across the tube opening. As the bottle pressure goes up so does the gas speed and the vacuum level. The increase in vacuum pulls more fuel out of the nozzle which then helps to steer clear of going lean. Looking at the individual components of this kit, this is a big kit but it's gonna include everything that you need to get this installed. It's a 10-pound bottle but it will arrive to you emptied just so you guys know. You get your bottle clamps, the nitrous nozzle, your horse assemblies, fuel jets, a wiring harness, all of your hardware and fittings, and your switch cover.Like I said earlier this is system is used with the stock fuel rails and it needs fuel pressure to be at 40 psi. When it comes to price you can expect to play close to the $600 mark for this. A lot of people consider nitrous to be one of the best bang for your buck modifications when it comes to return on investment. How else can you add over 100 horsepower while only spending $600? Now the flip side of that is that it isn't a constant horsepower add but either way if you wanna compare the cost of this kit to your other options out there, this kit is less expensive. The nitrous express kits are a little bit more expensive but they do offer up to 150 shot if you are looking for a more than 125. Install wise this is a time-consuming instal but it's straight forward and not difficult as long as you can do some basic wiring. You will expect to spend about a half a day in the garage. I'm gonna call this a two out of three wrench in the difficulty meter. You are gonna need a handful of different tools and of course, wiring equipment as well so you can wire this up.I am gonna glaze over the details here just to give you guys an idea since we aren't going to show you guys a full instal, but there are step by step instructions that are gonna come with the kit. You will need to decide where to put everything. Mount the nitrous bottle, mount the nitrous delivery line under the car, mount the nitrous management unit, instal the nitrous nozzle, and wire everything up per the instructions. Once that is done you will need to program the activation switch, install the fuel delivery line, check both the fuel and the pressure lines, and check the fuel quality and ignition timing. Like I said it's just a basic overview, but that's what you are looking at instal wise. That's gonna wrap things up for the Zex Wet Injected Nitrous System for the '86 to '04 V8, and as always you can check out more online right here at americanmuscle.com.
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Features, Description, Reviews, Q&A, Specs & Installation
Technical Notes. Professional Installation recommended. Requires fuel pressure of 40 PSI.
Shipping Notes. This item ships ground only, expedite shipping is not available for this item
Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
May 02, 2019
The zex wey kit is amazing it really gives the stock GTs that power they need in the higher gears. I recommend for any GT owner who needs power top end bang for your buck.Helpful (1)
April 26, 2019
Gained 4 mph and lost .5 seconds to the 60ft in the 1/8 mph with the 125 jets. Car pulls much harder if you can keep the tires hooked up in 1st and 2nd.Helpful (0)
April 06, 2019
Great kit im ordering
I love it great power gains you tube (countryboy6767)Helpful (2)
April 05, 2019
Great product. Very easy and straight forward install.Helpful (0)
March 07, 2019
100 Shot in my 87 Stang
Very happy with nitrous ZEX!! Huge POWER diference only in 100 shot. There's some vídeos on youtube chanel(angelaguimir).Helpful (2)
February 12, 2019
Got it fast really easy to install took me 2 hours I would recommend it.Helpful (1)
July 31, 2018
Best bang for your buck.
Pretty straight forward install. I went from running 13.8 with bolt ons and gears to running 12.3 on the 100 shot. Extremely happy with it. I would recommend getting a window switch and nitrous outlet fuel rail adapter.Helpful (5)
July 24, 2018
Does not contain proper parts
Fuel rail fitting is not the correct size for my 2000 gt and the inline fitting is also not the correct size as both are too large, kit did not include and wire to run an arming switch nor a switch. Not satisfiedHelpful (5)
July 13, 2018
Great product for the price. Installation took a couple of hours with the help from your video. Everything you needed was included. Shipping was the fastest 24 hours. Americanmuscle is the best bang for your buck.Helpful (5)
May 09, 2018
Kinda scary at first trying to figure out the instructions. But very simple once you start hooking up the line.Helpful (6)
safe for high mileage car Would it be safe to use this kit on a 03 mach 1 with 130,000 miles on it. I'd like to go faster but need my car for daily driving cant afford to rebuild a motor.
A properly maintained engine can handle the occasional weekend beating. Just as long as you don't use your "go-juice" every time your late to work....
is there anyway to convert the kit from throttle engaged to button? maybe instead of tapping the tps have the lead to a button?
A Button can be used for activation, but is not advised. We recommend TPS switched or a window switch.
So I'm new to the nitrous scene and this might seem like a dumb question. Does the bottle come filled or do I have to find a gas supply company locally to fill it for me?
Zex Nitrous Bottles are shipped empty and will need to be filled by the receiver.
Wet and dry ?
This would be a wet style system.
Is it safe to put it on a mustang gt 2001 stock ?
With a good tune, this would be okay to run low pressure yes.
The ZEX Wet Injected Nitrous System is capable of adding in a purge system. We recommend following the directions in the purge kit you select, as this can vary from kit to kit. With gains up to 100hp, a handheld tuner can be used with custom tunes, however over a 100hp shot will require a dyno tune. You are unable to make adjustments to the 4.6L with a timing light, as timing is controlled electronically via the PCM.
A tune will be needed for the ZEX Wet Injected Nitrous System and any other nitrous system.
The ZEX Wet Injected Nitrous System will only be able to be active at wide open throttle, so letting off the throttle will disable the nitrous system until you go to wide open throttle again.
To achieve the 40 pounds of fuel pressure the ZEX Wet Injected Nitrous System requires you would need a fuel pressure gauge and regulator. If you have any other questions or concerns feel free to call or chat in.
The ZEX Wet Injected Nitrous System will work on your 1997 Cobra. It is a good idea to run a window switch so you can dial into what RPM the nitrous is run at. We suggest reaching out to your tuner so that you can dial in exactly when it is the best time to have the nitrous engaged and how much to run.
It is possible to run a 75 wet shot ontop of that system but it would be unstable. It would be recommended to build the bottom end of the engine so that it would be able to handle that amount of power.
A purge can be used with the ZEX Wet Injected Nitrous System. A purge solenoid and kit like the Nitrous Outlet Purge Kit which I have provided a link for below would need to be ran in line with your nitrous solenoid. https://www.americanmuscle.com/nitrous-outlet-purge-kit.html
It would depend entirely on what bolt ons you have, and how much power your making. The most accurate way to check how much power you're making is to dyno the car.
The ZEX Wet Injected Nitrous System will only work with EFI Mustangs from 86-04
A window switch is able to be used with this nitrous kit.
(approx) 4 Hours
Mechanical expertise or professional installation required.
What's in the BoxHardware included:
|Wet or Dry:||Wet||Included Jet Sizes:||75-125|
|Delivery System:||Nozzle||Bottle Size Included:||10lbs|
Fits V8's Only