Right now I have the ZEX 82220 kit on my 350z. If I'm right it goes till 100 shots. How can I upgrade my system to shot 150 or more? I tried to contact ZEX more than 2 times but no response. So far I found this add-on on their website : ZEXâ„¢ - Sorry...

Has anyone upgraded this nos system?

 

i dont know anything about nitrous but i am pretty sure u need different jets. and u say u have a zex and a nos kit? why do u have 2 different brands of nitrous kits on your car?

 

Moved to proper forum

 

all u need to do is buy the right jets...pretty sure the phone works last time i checked at when trying to call zex

 

i have a zex kit. upgraded it with nos fuel solenoid and zex big shot solenoid. if u want 150hp or more need to upgrade the solenoid's as well. that kind of a shot u would be safer a lil rich but the leaner the meaner (but not safe, AGAIN NOT S.A.F.E RUNING LEAN)

 

your pushing it running a 100 shot if your stock other than the juice, i highly wouldnt recommend going any higher

 

something to tune timing and jets

 

I already did some internal mods like:
cp pistons
connecting rods
main and rod bearings
main and head studs
head gasket

I bought the greddy e-manage ultimate. A local tuner will tune the car with the e-manage.

Planning to do the camshaft, valve springs and ignition coils soon.

other mods:
kinetix intake manifold
megan long tube headers
greddy 70mm dual exhaust
flywheel and clutch kit.

Hope it works. I want to go heavy on nitrous.

 

Re-jet for a 150 and see how that goes. If you do have big enough solenoids, go for a 200 shot. I'd suggest probably going to a dual-stage setup to help the car handle the power though, 200 extra hp at one time is going to break the tires loose in 2nd and probably 3rd gear, if you could bring on 100hp at 3500 rpms and another 100 at 5000 or so, you can moderate the torque hit and make it manageable. Downside to this is you need double of everything, solenoids, nozzles, controllers, etc. But thats the cost of a high-power nitrous setup.

Also, consider your fueling, if you are running a stock pump with big nitrous, you may be running out of fuel. Just keep it in mind.

I'm in Miami as well, just curious, who did the engine work, and who's tuning it?

 

Actually I'm in South America. Street race is very popular here. Especially with the japanese cars like supra, mark2, subaru, evolutions.

I was told to buy this nos controller:
NOS 15835BNOS Time Based Progressive Nitrous Controller

Will this setup be able to handle 200 shots? I'm planning to start with 125 and after that 150 shots.

For the fuel I bought the Walbro 255LPH fuel pump.

After reading I planned to buy the ZEX 82064 ADD-A-STAGE NITROUS 2-STAGE EFI UPGRADE KIT. This kit goes till 250shots.

 

thats too much nitrous.. 150hp is plenty for that kinda car. anything more is goin to cost u alot of money in the long run just a heads up. 150hp on a stop 350z with bolt ons is fast low 12s high 11s

 

he's already built, so more HP will be ok for the motor.

If you do it in two stages, i'd say start at 100-100, for a 200 shot. If that works nicely, try upping the stages one at a time to 125 or so, for a total of 250hp bonus.

I'd be willing to bet, at that level, you'll start breaking other stuff in the drivetrain before you go any faster. On the street you might be ok, but you'll need serious tires and a good clutch, and drive very carefully. One ****-up with that much spray and you will break a rod or something faster than you can think about it.

 

I'm planning to drive on 18" wheels with 285 tires. (Nitto semi slicks)
Already have a fidanza flywheel (15Lbs) and stage 3 clutch and pressure plate. I'm planning to start at 100 shots, after that 125.
After changing the camshafts, ignition coils and spring valves I will try to get to 175.

 

does anyone know how much nitrous a fully built vqde can handle? at what point do you have to switch to a dry kit? on a fully built engine, maybe two 125 wet shots with 4 deg pulled? just curious

 

That all depends on your definition of "fully built," but more so on your actual build list. You can get a basic idea from the turbo guys, though.

BTW, I'm not sure why you'd want a "dry kit," which means it's just straight nitrous and no fuel. Additionally, I'm not sure why you'd want to stay with 2 wet 125 shots.

Instead of all that, you need to think about a direct port set up.

Lastly, the general rule of thumb is that for every 50 shot, you should take out 2 degrees of timing.

 

well, maybe im getting dry setups and direct port setups mixed around. when i said dry i meant direct port.

wet kits are easier to hide, but really im just curious to know how much nitrous an engine (with every internal replaced with forged parts and the best money can get) can handle without having problems.

and i realize the general rule is 2deg per 50, but thats on a stock block, i thought it might be less for a stronger block

 

You can NOT do more than a 100 shot with the ZEX system...It is a very safe but limited kit...designed for your weekend warrior with little to no knowledge about nitrous.

If you feel confident about how nitrous oxide works and the effect it has on the engine, It may be time to graduate to a simple fogger system (single or dual) or a direct port system by NX or NOS...don't bother buying and "off" brand system (ny-trex,dyno tune,venom..ect) Go with something that has proven performance and a solid history...if you want to upgrade, do it right

 

Last time I checked, my Dynotune Nitrous kit was still working as intended/designed.

 

It all comes down to solenoid, fogger, and jet design...im sure dyno tune is a good system but not as efficient as a NX or NOS brand system...proper installation is huge factor as well....

 

So with your efficient nitrous kit, what kind of track numbers are you putting out?