Hey guys, picked up a Zex kit this weekend and I am in the midst of installing it now.
Right now I am hung up waiting for some longer lines (4ft) so I can mount my ZEX NMU modules more out of the way. I am planning on running the shot through the supercharger so I will report back on it if I have any problems, but it seems other have done the same type of install with some sucess so I am going to give it a shot. :guns:

It's a Zex Wet EFI 82021 (http://zex.com/Products/NitrousOxide/Wet4-6cyl.asp) kit and it's a 55-75 shot.

Here are some pictures of the install in progress.

The Tank
http://www.cobaltss.org/albums/ZEX/IMG_1351.sized.jpg

The engine bay.
http://www.cobaltss.org/albums/ZEX/IMG_1353.sized.jpg

The Arming switch
http://www.cobaltss.org/albums/ZEX/IMG_1360.sized.jpg

The Fuel tap off the schader valve
http://www.cobaltss.org/albums/ZEX/IMG_1355.sized.jpg

A close up of the ZEX module mounted on the passenger side wheel well.
http://www.cobaltss.org/albums/ZEX/IMG_1354.sized.jpg

The wiring mess, this is actually a little accessory fuse block I installed under the radio, it handles my wideband, my Interceptor gauge, and my inline FM modulator and now my nitrous system. You can't really tell whats going on in there but I promise to clean it up before I button up the car.

http://www.cobaltss.org/albums/ZEX/IMG_1364.sized.jpg

why aren't those lines long enough? where are you planning on mounting the unit?

I hope everything goes well when you hit the button, you seem like you know what your talking about, so I have a feeling we wont be seeing a...DAM! I BLEW IT UP thread.:)

why aren't those lines long enough? where are you planning on mounting the unit?

Here ya go. The driver side is pretty crowded in the cobalt so I figured it would look nicer on the passenger side.


A close up of the ZEX module mounted on the passenger side wheel well.
http://www.cobaltss.org/albums/ZEX/IMG_1354.sized.jpg

Lookin good bro. Bet you anxious to hit it huh:cssNET:

I put my solenoid and purge valves right behind the grill of the car, wish I had some pics to show you guys. It purges right below the bowtie on the grill. Control box and all the solenoids are visible through the grill, it look super sweet...Had the zx kit on for almost a year now, good luck with the rest of the install. Welcome to the Sprayers Club...

I have a question. I have a dry shot kit. Can I make it a wet shot? Prolly a stupid question just asking, because I am to afraid to spray before the SC. Thanx

I have a question. I have a dry shot kit. Can I make it a wet shot? Prolly a stupid question just asking, because I am to afraid to spray before the SC. Thanx


Most of the vendors sell a dry to wet upgrade kit. Pretty sure Zex does.

Most of the vendors sell a dry to wet upgrade kit. Pretty sure Zex does.


Interesting cannot find one online. Any ideas?

Looks awesome Zinner, now you just hafta clean up the lines a bit, but I assume that's why you wanted the extra 4 ft for, lol.

Can't wait to hear how the engine likes the shot before the blower. It should be fine Grand Prix guys have been running it that way forever.

Interesting cannot find one online. Any ideas?


Look up ZEX part number 81023

That might work for you

Looks awesome Zinner, now you just hafta clean up the lines a bit, but I assume that's why you wanted the extra 4 ft for, lol.

Can't wait to hear how the engine likes the shot before the blower. It should be fine Grand Prix guys have been running it that way forever.


Oh yeah I have cleaned up the wiring with some loom after the pictures were taken and the lines are just wire tired for now to keep em outta the way.

;) correct me if wrong, but how can u run a wet shot threw the supercharger?? wet shot is a mixture of nitrous and fuel. a dry shot is just nitrous threw an intake or before the trottle body. why would run a wet shot threww the supercharger?? i must of heard wrong sorry to bash, just askin lol!!! i also heard theres a teflon in our supercharger which starts to come off if we use nitrous. i think best desion on nitrous is just direct port,,,,safest what do u all think???????:)

A wet shot is a mixture of fuel and nitrous correct. It usually is introduced before the throttle body as well....basic wet shot. Very safe. More advanced wet shot is direct port.....drilling and tapping each individual, and having 4 nozzles. Wet is the safest way to go because it adds the extra NEEDED fuel. As far as introducing it before the super charger, yes it does increase the likelyhood of premture impellar wear.

Here ya go. The driver side is pretty crowded in the cobalt so I figured it would look nicer on the passenger side.

right I see that, but it looks like those are lines are more than long enough. I was thinking of mounting it like 05YELLOWSS did his kit. Looks like the best place to me...thats where I plan to mount mine eventually as well.

right I see that, but it looks like those are lines are more than long enough. I was thinking of mounting it like 05YELLOWSS did his kit. Looks like the best place to me...thats where I plan to mount mine eventually as well.


The lines wsith the kit at 24 inches and they aren't long enough.

I just got the 4 ft lines in today and they are the perfect length.

Do you have some pictures of a better way or even a description?

did u run the line from your bottle through your car, or underneath wiht the fuel justw ondeirng cuz im about to my install tomorow, im gonna do a complete write up, but yah please get back to em asap

That wet shot is going to kill your blower.

Look up ZEX part number 81023

That might work for you


Thanx SS33 Worked!!

has anyone seen a kit with the machine gun attacthment?

Nope was just reading about it thou, sems interesting

HEy zinner, so how is it. Does it pull alot stronger at the top of the gears? Just curious, I am sitting on the ZEX page trying to decide if I should order the wet upgrade of not!!! Thanx

Thanx SS33 Worked!!

No problem man :cssNET:

HEy zinner, so how is it. Does it pull alot stronger at the top of the gears? Just curious, I am sitting on the ZEX page trying to decide if I should order the wet upgrade of not!!! Thanx

He is more then likely still picking up the bottom end pieces of his block after spraying that shot going down the street. Can someone say "Under Warranty?"

:lol: seriously though, have you engaged warp speeds yet? My other question is why put the switch by the stick? You know if you have a passenger they will be tempted to play with it there. I would have mounted it in that area where the trunk release was at so it's not in plain sight regardless ;)

For those of you looking at the machine gun kit, don't waste your money. You can pulse it with your finger just as fast, and it is no louder than a regular purge. Kind of misleading on Zex's part. Better off just getting and LED purge and hitting the button quick...... I'm a lil angry I spent the additional 100 bucks.

For those of you looking at the machine gun kit, don't waste your money. You can pulse it with your finger just as fast, and it is no louder than a regular purge. Kind of misleading on Zex's part. Better off just getting and LED purge and hitting the button quick...... I'm a lil angry I spent the additional 100 bucks.

What did you Dyno with your kit on the 2.4? Seem as fast as an SS/SC?

Hah a dyno. I don't think they know what that is where I live now. Also I've never been in an S/C so I couldn't tell ya. Sorry bout that.

by theory it should be just as fast as a sc, if not faster (due to weight issues such as the heavy 18'' wheels the sc has)

Ok here are some final install pix.

The Big Picture
http://www.cobaltss.org/albums/ZEX/IMG_1369.sized.jpg

Up Close nozzle mounting
http://www.cobaltss.org/albums/ZEX/IMG_1372.sized.jpg

is that the stock intake?

(i wouldnt know, i have a 2.4)

did u run the line from your bottle through your car, or underneath wiht the fuel justw ondeirng cuz im about to my install tomorow, im gonna do a complete write up, but yah please get back to em asap


Along the fuel/brake lines under the car.

That wet shot is going to kill your blower.

Then I will buy another blower. ;)


See ya in my rear view mirror :lol:

is that the stock intake?

(i wouldnt know, i have a 2.4)

Yes I removed my K&N intake to make the MAF sensor happy with HPtuners.

Nawwwwwwwzzzzzzz

It wont damage the blower, the blower used in the balt doesnt use a teflon coating as originally thought, it uses epoxy instead, so its nitrous safe

HEy zinner, so how is it. Does it pull alot stronger at the top of the gears? Just curious, I am sitting on the ZEX page trying to decide if I should order the wet upgrade of not!!! Thanx


I ran it today and of course it runs stronger. :guns:

There is a couple people running a dry shot with bigger injectors, I think your limited to about a 50 shot dry before you pressing your luck.

It wont damage the blower, the blower used in the balt doesnt use a teflon coating as originally thought, it uses epoxy instead, so its nitrous safe

I don't have any misconceptions that Nitrous is worry free and I realize that it is going to put more stress on the engine and it's components, but I don't believe that the blower is going to fail signifigantly faster because of a wet shot.

If it does oh well, I will have learned my lesson the hard way.

It's alright, i'm running a small dry shot too

The lines wsith the kit at 24 inches and they aren't long enough.

I just got the 4 ft lines in today and they are the perfect length.

Do you have some pictures of a better way or even a description?

well I would suggest mounting the unit right in front of the blower in the grill/headlight area BUT I forgot on the Cobalts the engine space is super tight in the front because of the blower so nevermind. could always mount it on the firewall I guess...

If it does oh well, I will have learned my lesson the hard way.

thats the spirit :)

i want vids

Interesting, I thought running the dry shot thru the blower was a no no? Am I mis informed here?

im sure you could run a dry thru it but a very small one...and i wouldnt press my luck. as with most apps on a more or less stock car, a wet shot will be able to run a higher shot (not by much but noticeable) and will no doubt mix better (correct me if im wrong...). but I always say make sure you have a fuel pressure safety switch, and a window switch at LEAST. Good luck woody, if you need any help...you know where i work

ahhh almost forgot the most important things....COLD PLUGS, A tune, and timing

Duh, got the plugs getting the reflash and have bigger injectors

Duh, got the plugs getting the reflash and have bigger injectors
see now your gonna own me.....i must stab you:guns:

Looks good zinner, do you plan on running her on dyno?

I was just wanna see what the curves look like w/ that shot

hey zinner how do you get your blower so shiny? mine has like offcolors of grey in it.

Spraying it feels good doesn't it, it makes my day every time I do, can't wait to get home and fill the bottle...mmm