Nos Help!

[sweet sho]

hey guys i'm not to sure if i should have posted this here but i'm going to give it a shot . Anyway i had bought a nos kit from ebay (zex 82011) cause i had done some homework and found out that was the one to buy for the sho's and it came highly recommended on the forum. I had bought a kit that from the pics had looked really good and the guy had said that he had barly used since he bought it from his friend. But to make a long story short he hosed me and i think ripped me off. He didn't send the purge kit like what was suppose to be in the nos kit. The dry nozzle is stripped and he used a jb-weld or something close to it to seal it before. The actual nos line that goes to the bottle had a hole in it. So i was pretty upset . Obviously i didn't do my homework very well.

So now i've replaced the parts that i could see that were obvious to me (like a new nozzle and a new line). What i need from someone out there is some pics or some help on how to hook this thing up. The pics would really help me out of what some pople did in there car. Some pointers on how to hook it up would also help. By doing this it will also help me figure out what else i'm missing so i can get this thing going. A few guys that i've read up on have said that it's an easy kit to do so we'll see.

Anything will Help and sorry for the big story.
Thanks

 

[strings1732]

First off, do you have the instructions? If not, go to zex's website and search for the 82011 kit and find the instructions. Secondly, what do you want pointers on? Do you want to know where to hook the wires up at? or do you want to know where to mount stuff(bottle, nitrous managment unit)? or where to run the lines at? I will let you know right now, if you plan on drag racing your car with the nitrous, You must have a blowdown tube. The cheap and easy way to get this is to buy a section of 3/4 heater hose and a grommet. Run it from the bottle to the outside of the car by drilling a hole in the trunk pan and use the grommet. If the bottle is in the trunk or the passenger compartment, you will need this. The speakers in the rear package tray turn the trunk into a part of the passenger compartment according to the NHRA and the tech inspectors at the drag strip.

Do you have a gen one, or a gen two? The mounting places can be slightly nicer in the gen two at least in my opinion.

Also, it's not called NOS unless it's specifically a NOS brand(Nitrous Oxide Systems) kit. It's either Nitrous, Nitrous Oxide, or N2O. Not trying to be rude or anything, just letting you know.

 

[masho95]

I will let you know right now, if you plan on drag racing your car with the nitrous, You must have a blowdown tube.

If the bottle is in the trunk or the passenger compartment, you will need this.

That's funny my tank is located in my trunk and the tech inspectors have never said a word about it to me. I believe you only need the blowdown tube per NHRA rules if the tank is located inside the passenger compartment, IE. the cabin area.

 

[sweet sho]

Yes i do have the instructions but they're pretty worn out. I also have a gen 2(95). I'm not sure if that makes a difference. I've already got my nos line fed through the car and the bottle already mounted in the back( trunk right below the speakers).

Yes i was wondering how to hook up the switch and the rest of the nos lines that go to the brain. The guy who owned it before me painted the brain so nothings labeled. Hopefully that helps. Thanks

 

[strings1732]

That's funny my tank is located in my trunk and the tech inspectors have never said a word about it to me. I believe you only need the blowdown tube per NHRA rules if the tank is located inside the passenger compartment, IE. the cabin area.

Like I said before, if you ask any GOOD tech inspector, they will tell you this. The speeakers in the package tray can not withstand gas. They do not seal to the tray perfectly so therefore the N2O will leak into the cabin without a blowdown tube. So it becomes part of the cabin area. I got away with it a few times but they ended up busting me for it a few times later and that's what they told me. This was at an NHRA sactioned event. non NHRAS events are more loosely controlled and don't say much about it.

 

[strings1732]

Yes i do have the instructions but they're pretty worn out. I also have a gen 2(95). I'm not sure if that makes a difference. I've already got my nos line fed through the car and the bottle already mounted in the back( trunk right below the speakers).

Yes i was wondering how to hook up the switch and the rest of the nos lines that go to the brain. The guy who owned it before me painted the brain so nothings labeled. Hopefully that helps. Thanks

Go to the zex website and look up the instructions. in fact, here they are:
http://www.zex.com/Base/Instructions/ZEX109.pdf
it's in PDF format though...

Figure G on page 7 has what you are looking for about the NMU(Nitrous Management Unit). I placed the button in a nifty little button panel that I made out of plastic. It fits in the tape holder hole in the front of the Gen 2 console(the same one you have). I don't know where you should put it but when it comes to wiring it, use a test light at the back of your fuse panel to see which wires are only on when the ignition is turned on. once you find one, remove the fuse and find which one is still hot. One will no longer be hot because the fuse has been removed. Splice into to the one that is still hot when the fuse is removed. Then run it to the button. Find a good ground for the button. Then with the third connection on the switch, hok up the red wire from the NMU. The white wire from the NMU goes to the TPS(Throttle position sensor.) The black wire from the NMU goes to a suitable ground. Once you have these things hooked up, follow the instructions for programming the activation switch. Whatever you do, get in the car to program it. Do not just move the throttle body butterfly by hand. A few factors when doing it by hand can cause this to screw up the activation and you may have to re-program it later(stretched throttle cable, bent brackets, carpet is in the way so you can't fully floor it, you get the idea.) If you have any more questions, just ask!

 

[sweet sho]

O.K. well that was great help. Thanks strings 1732

I just have a couple dumb questions and i'm sorry for asking.

1. Where on the TPS sensor do i hook-up the white wire?
2. where did you mount the regulartor hose line on the stock FPR? And what about the vacuum lines to the intake?
3. Where does the line go to that connects to the fuel jet on the brain?

Thanks

 

[SHOracer14]

The white wire goes on the middle wire in the TPS. Remove the hose that runs from the intake to the FPR. Hook the Regulator vacuum line to the FPR and hook the Intake vacuum line to the hole that the other vacuum line was on. I put the nozzle right into the rubber hose. I drilled the hole 2-3 sizes to small so that it was a tight fit. Be safe and have fun.

 

[strings1732]

When looking at the NMU, have the line attachments facing away from you. In other words, have the tiny button facing you. The line on the left feeds into the intake tubing. This is where you will install your nitrous jetting(inside the back of the nozzle) The fuel jetting will be going on the right side. Slide the jetting in and install the barb fitting. From there you will install a vacuum hose to the intake. The middle barb fitting will need a vacuum hose installed to the fuel pressure regulator. If you do not know where this stuff is, look at the passenger side of the intake. There will be a small tube going from the intake to a bulb looking thing on top of the fuel rail(in the middle of the runners but still on the passenger side). Remove this hose and install the hoses as previously stated. I do not remember which wire it goes to on the TPS but I think it's the middle one. Do you know the size jetting to use for the shot you plan on using? I'm assuming it's going to be a 75 shot so for the fuel(the one on the brain) you will need to use a 32 jet. For the N2O(the one in the nozzle in the intake duct), you will need to use a 38.

If you have any more questions, just let us know and I'll try and help out as best I can!

You posted that while I was typing SHORacer! LOL!

 

[sweet sho]

ok i read it this morning(the last post) and figured out what you mean. The 2 line attachments that goes to the FPR and the intake are just vaccuum lines? All i'm doing is taking the one that attaches to the FPR and the intake and replacing them with 2 seperate ones that goes to the brain. I thought that when it had said fuel line i thought that i had to mount it somewhere to a fuel supply and that's how it made it safe because it always had fuel with it. . Anyway i think that i figured out what i need and i'm going to go to the parts store and get everything right now. So did you hose clamp those vacuum lines? I wouldn't have thought that you needed to but i thought that i'd ask?

 

[sweet sho]

oh ya i'm doing a 55 shot cause that's what came with it. I compared the #'s that was on the zex kit and that's what's in there. I think that's fine for me right now till i get the hang of it and then i'd like to go to a 75 shot.

 

[strings1732]

The "fuel line" from the brain actually pushes vacuum against the Fuel pressure regulator and therefore is monitering the fuel pressure. For the 55 shot you will need to use a 36 for th fuel and a 32 for the nitrous. Yes you must actually clamp the vacuum lines. If you don't, you risk one popping off and your motor can be harmed.

 

[sweet sho]

o.k, cool i'm goin to give it a try. Would you happen to have a picture of it installed in your car? Just so i can see what it's suppose to look like. Thanks for everything strings.

Or anyone else with a zex kit in their car.

 

[strings1732]

I don't. I'm sorry but I'll try and get some later. I mounted the NMU near where the airbox sits. I have an SS inner fender CAI so I mounted the nmu underneath it.

 

[sweet sho]

So just so i hooked them up right. If i'm looking at the NMU and the tiny button is facing me. The line on the right holding the fuel jet facing away from me conects to the intake where the line had connected to the FPR before? Then the line in the middle connects with another vacuum line to the little **** that sticks up on the FPR that was connected to the intake before.

So once i hook up the vacuum lines they can stay there permanently? And what did you do to connect to the middle wire on the TPS? You cut it and then spliced in to it?
Thanks again

 

[strings1732]

Yes the hose part is correct. Once you hookl them up, they will stay there always. It will not hurt every day driving.

for splicing into the TPS, I used an inline T-tap quick splice connectors. It came with the kit but you can get stuff like this(quick splice connectors) at any auto parts store. Even Walmart carries them. They cut through the wire cover and hit the wire and make a strong connection without having to do any cutting.