OK I had the ZEX wet kit on my car, but it is impossible to run it progressive or make more than 125 (flywheel) hp with it. I have since sold the kit and bought the new NX 4.6 Plate kit.

I have a 2003 GT hardtop with a M/T. Mods include,Nitto DRs. 275/40/17, MAC cold air(fenderwell), Stock intake and T/B, Steeda U/D pullies, UPR offroad X pipe, Flowmaster 2 chamber cat back, Pro 5.0 Shifter, Walbro 255 fuel pump, Stock tune, NX wet shot 4.6 plate system.

The differences I have found between the two are:
1. NX uses all billet hardware. ZEX uses soft aluminum.
2. The NX bottle valve doesnt require as much turning to get it fully open.
3. The NX pressure guage is far superior to the ZEX one in quality and its liquid filled.
4. The NX solenoids are way easier to install than the ZEX "control box".
5. The NX solenoids are capable of flowing much more than the ZEX units.
6. The NX plate makes the intake sit up higher, which makes my engine look a tad bigger.
7. The NX plate is billet. I broke 2 of the soft aluminum ZEX nozzles.
8. The initial "Hit" with the ZEX system was rather hard and I feel rougher on the engine. The NX plate comes on very smooth with no hard jolt to the engine.
9. The ZEX system made good initial power but tapered off as the RPMs rose. The NX system pulled much harder all the way to the redline.(I finally felt the skin pulling back against my face).
10. Personally I think the NX kit is much better looking than the purple ZEX hardware.
11. The NX switches are lighted, the ZEX switches are not.
12. The engine just "feels" like its not running as hard with the NX kit and it makes a very noticable amount of more power.
13. With the plate installed I felt more power down low while driving N/A.
14. The ZEX kit only makes 100 hp to the wheels(if that). The NX kit makes AT LEAST 150 hp to the rear wheels.
15. The NX kit requires no change in timing. Even with the 150 shot but octane booster is reccomended. The ZEX kit recommends 4 degrees of timing retard with the 125(flywheel) shot.
16. The NX kit is fully upgradable with such things as more spray, progressive units, and NX carries a way bigger inventory of parts and fittings.

I hope this can help some of you that are looking to make a decision between which nitrous kit to buy. I know alot of you like the venom kit. I also thought about it, but I want to eventually build the motor and possibly use more spray. That is not really possible with the venom kit. If you buy all the safety parts to go with the NX kit, I believe you will have THE ultimate kit. Just save your money and buy NX you will be much more satisfied in the end. I had to learn the hard way and I wasted alot of money with the ZEX kit.

No HP numbers or track times yet, but I will go to the track this weekend. I was running 12.90s with the ZEX kit on a 100 shot. From the Seat of the pants feel, I believe 12.30s or 12.40s should be no problem on the NX 100 shot with a decent 60 ft. Another guy I know has the same setup, but with a shark nozzle. He puts down 385 hp at the wheels. I will expect at least that much with a 150 shot and a tune. Torque will be close to 500 ft pounds if not more.
Time for a new clutch......

 

So youre running a 150shot without a tune on stock timing? Well that seems kinda risky imo.

 

No Im running a 100 shot with stock tune right now and it runs great. The NX manual says no timing changes are needed up to a 150 shot. Remember you have to install colder plugs. A 150 shot with stock timing needs 2 heat ranges colder and octane booster is recommended. I myself will have the timing retarded, but im just letting you guys know what is possible with the new kit.

 

So this nx will hold 150 hp on my 03gt? I would like to add some pwoer but was thinking of blower, I was concerned with the plastic upper intake, wouldn't htat be an issues with spray? I figure if I do go with a 150 shot, we will tune it with the predator but I was figuring on safety switches, window switches as well as 24# injectors and a 190lph fuel pump or should I just go with a 255 and be done wiht it? Do you have any pics of hte setup you can send to
bwieringa@earthlink.net
THANSK!!

 

i run a 125wet shot stock tune with my compucar kit. as long as you can read plugs its cool. i am gonna tune it just not needed for my mods really yet.

 

The plastic intake will be an issue if you make it an issue, use the right safety switches, and use the nitrous the right way and you SHOULDNT have any problems. Im not saying youll be 110% fine, but youll lower the chances of braking something when you do it correctly. That includes a tune or at least checking the a/f, new plugs, lower timing, higher octane, all safety switches. A new pump and injectors might not be necessary.

 

The new spay bar is supposed to be the best way to atomize all the fuel. It is far superior to the nozzle before the throttle body. The kit is able to atomize up to a 300 hp shot. I am not at all worried about fuel puddling with this new kit.

Just put a window switch on it that is set to come on at around 3000 rpm and cut off at say 5800rpm. With that you can just drive the car like normal and the switch will cut it on for you. Alot of people have to wait for the RPMs to rise before they go WOT and it slows their ET down a bit.

 

Im anxious to see the drag testing on this, and the numbers. Congrats, sounds like a great kit.

 

please move to power adders.

 

Where can i buy this?

 

Summit, Jegs, NX.

 

Gotcha, thanks. 600 bucks for 150 rwhp? not bad at all. How much is it usually to refill, say, a ten-pound bottle?

 

Depends where you live really. Anywhere from 3-5$ per pound. Itll be more then $600 when you do it the right way and get everything you need to run it safely and efficiently.

 

its only $2.50 to fill here in orlando, FL. with tax its about 26 bucks to fill it.

 

It costs me around $30 dollars where I go. One place charges 5.00 a pound! thats 50 bucks and its rediculous. The kit is $585 but you really want to buy the GenX2 kit. It comes with all the safety you will need except for a window switch. The GenX2 kit is around $350-400. Just depends on where you buy it from. All together its just under a grand. When you look at prices of blowers you will see its a good alternative if you dont have the cash for a blower (like me).

 

No times yet, but I beat a ZO6 tonight. The story is in the "Smack Talk" forum. Goin to the track tuesday.

 

Went to the track last night.12.91 at 110 with absolutely no traction. I had problems getting a halfway decent run in. I have no bottle heater on this kit yet so the bottle was hovering around 850-900 psi. Everytime I launched it, I just blew the tires away. My 60 fts were about 2.20. I held the rpms at about 3000 then feathered the clutch out, but when I hit WOT it just roasted the tires every time. Then when I went to shift into second the tires would still spin through most of the gear. I guess I need some suspension stuff done to it. From a roll the car hauls, but from a stop or a very short roll I cant get any traction at all. Any suggestions? My tires are worn out nitto drag radials and I set them at 20psi.

 

lower the psi to 16-18 is where most nittos like them in that size. mine like 18ish normaly.

 

I might head back out there and try lowering the pressure saturday. They were spinning really bad so I might have to build the rearend and put some slicks on it. I would love to have a car that would run good on street tires though. Maybe I can try the Mickey Thompson ET Street radials. I heard they hook the best but I dont want to break the rearend.

 

i'm with you nittos are just at the breaking point if you ask me. anything stickyer and i know i will break my rear end. I need to pgrade it though anyhow so i can finaly use my slicks.

 

I sure dont have money for a blower. What should i put in the car before i get this wet plate kit? I wanna make sure i dont spend another week without a Mustang waiting for a new engine.

 

You need to put NGK TR6 spark plugs in it. I think the number is 4177 but I could be wrong. Make sure you gap them at .035. Definately change the fuel filter if you havent changed it lately. It is a good idea to check your fuel pressure. Make sure its at least at 39psi while idling. If you plan on running more than a 100 shot you will need a bigger fuel pump. If you plan on running a 100 shot with the stock pump I would put a "fuel safety shutoff switch" on it. Some people call these "Hobbs" switches. It will shut off the nitrous system if your fuel pressure goes below a set psi. . Whenever you have gone through a few bottles, its probably a good idea to change the oil. These cars have pretty tight piston to wall clearances but some fuel can still get past the rings and contaminate the oil. Other than that you should be just fine. If you want to do everything at one time and forget about it, just buy the spark plugs and the GENX2 kit. Its about $375 but It comes with all the safety stuff you need except for a window switch.

 

Ive used BFG drag radials for over 3yrs on my stock suspension launching anywhere from 3-4000rpms and never broke anything? I upgraded about a year ago the only thing i found bad was my upper control arms where shot! I have a maniac friend that is running ET streets on 04 GT stock suspension and launching at 5k has been racing all summer long and no problems

Not saying that if he keeps doin that it wont break? Cause those ET Streets can Hook but that suspesion is alot tougher then most people think?

 

i know the suspenion will hold its the axles i am talking about.

 

Ive herd of people saying that too! buy Ive only seen one GT brake an axle! A friend of mine on 245s Nitto Drag radials and 4:10s, it was an 01GT with 3000 miles on it I think it was just a freak accident? car was brand spankin new! 2nd pass on the Nittos Sad part was a couple of the local Ford dealer Mechanics were out there too and my Bud tried to get it fixed under warranty those sorry *** mech.. told on him and said he was drag racing so no warranty work for him That totally took it out of him and he never drag raced again actually sold the car w/7k.

 

MT ET Streets going on next week. Then maybe I can get some decent traction. What Psi should I keep them at? They will be 275/40/17. What Rpm's should I launch at? I still have the stock axle. People I have talked to said that it will not break if I keep the 60ft. times above the 1.70's.

 

I have a stock 01 GT with flowmaster mufflers as my only mod. I have heard that a completely stock 4.6 v8 ford motor can handle a 100 shot with no problems. Is this true? If I end up getting nitrous it will most likely be the NX 100 shot plate system. Also if I get nitrous I will try and get a tune but I am not positive if I will be able to. What kind of effect will a 100 shot have on my transmission? I need all the help I can get so please feel free to put in your 2 cents. BTW my car is an auto with about 66,000 miles.

 

I have been spraying my car for over a year. First I ran a 75 shot with the stock tune and there was no audible detonation. Then I stepped up to a 100 shot of ZEX with plain 93 octane gas in it and stock tune. Then I heard detonation. Now Im running a 100 shot of the NX plate with stock tune and plain 93 octane. There is no audible detonation. I think its just amazing how the NX kit makes so much more power with no detonation. I guess its due to better atomization and better distibution to each cylinder. My car runs better than it did when I bought it after a year of weekly nitrous use.

Keep in mind that I have a bigger fuel pump so there is no worrying about the fuel supply. Also I have an offroad X pipe with a 2.5 inch cat back. My exhaust is flowing way better than your stock exhaust. A freeflowing exhaust reduces detonation and improves the nitrous system's performance.

With your stock setup I would run a 75 shot from the NX Plate system. Dont settle for a different system. The NX kit is far superior.

 

Beat another ZO6 and took the GT to over 150 mph . Story in "Smack Talk".

 

So I guess since it runs a little faster than a stock ZO6 I can estimate it makes about 410-415 hp at the flywheel. I figured my car makes about 280 while N/A so I guess the NX Kit added about 130- 135hp with a 100 shot and the bottle pressure at 900psi.

With the ZEX kit the car hit really hard at first then the power fell on its face towards the end of the powerband. This spray bar kit pulled through the entire powerband and the entire speedometer. Its kind of like having a Kenne Bell that you have to switch on and at low boost.