The most popular N2O kit is probably made by NOS. But what about ZEX, Nitrous Express, and the others. I want something that is safe, reliable, and efficient.

Is there any sytems to steer away from?

Not 100% sure on which is best, since im not squeezin, but In the performance mags i check out, I see NOS and Zex the most, so the more people carry it, the better your chances with customer service questions, tech support, price shopping and all around warranty claims... So The big dog in town isnt always a bad thing.
Sorry couldnt answer your question, but from parts sales, i know how they think.
~*Adam*~

the zex kits are expensive, but they are like computer controlled to give you the best n2o to fuel ratio and go off people pressure and a bunch of other cool stuff. NOS is plain old soleniod controlled nitrous.

Tons of good kits out there. I'd recommend you purchase a nitrous kit that has been designed for a specific ride. An example would be to research the kits for say a '99 4.6 4v Cobra. The nitrous companies have done extensive tests on this specific vehicle. Look at what is raced and then all you have to do is choose your price range and style of nitrous kit you like.

[UVBNBIT]

Originally posted by orvil
the zex kits are expensive, but they are like computer controlled to give you the best n2o to fuel ratio and go off people pressure and a bunch of other cool stuff. NOS is plain old soleniod controlled nitrous.

The zex kits are NOT expensive.. I paid $489 for mine though summit price match and since then I've seen them for as low as $439 on e-bay.

[Fast1]

I'd personnally go w/ the NOS brand...Very good kit lotta safety features...
p.s.i have one i'll sell for 300 never been used

[NOSLO50]

I use NX and it is awesome. The tech support they give you is unmatched.

[Benny]

My 91 coupe has fuel and ignition upgrades just don't know what nitrous system to use Nitrous works wet system or N.O.S dry system i'm not planing on going any higher than 150hp and i have been told that dry systems are only good for 100hp,

[Fast1]

I"d got w/ N.O.S. system stage 2 kit "dry" it comes w/ the larger inline pump..Also it has alot of safety features...U can spray up to 150 w/ this kit

[Julian Moore]

I have a 125 zex kit.......3-4 hour install. Easy, clean, great bang for your buck...and real easy to hide.
Jules

[1QWKSVT]

I've herd good things about the zex kit. I've got the NOS dry kit I can spray upto a 150 shot. I've had no problems with it, easy to install and hide .

[AZ93GT]

I have the NX 150hp Wet Kit and I love it. I have over 200 passes with the kit and have never experienced any problems. My vote would be for the NX kit.


Craig

I personally use and sell NX. Its a wet kit so you know you're getting enough fuel, the solenoids are bigger than most kits and will support alot of power, everything in the kit is of much better quality.