JonGTR

Single Nozzle Wet System Jetting

Nitrous Express
31N/18F 35HP
35N/20F 50HP
41N/24F 75HP

TNT
39N/22F 50HP

Nitrous Oxide Systems
34N/18F 40HP
37N/22F 50HP
39N/24F 60HP
41N/26F 70HP
43N/28F 80HP
46N/30F 100HP
52N/33F 125HP
61N/38F 150HP


Single Nozzle Dry System Jetting

Nitrous Oxide Systems
34N/44F 40HP
32N/42F 50HP
34N/42F 60HP
41N/36F 70HP

Zex
32N/36F 55HP
35N/34F 65HP
38N/32F 75HP



Direct Port Wet System Jetting

Nitrous Express using 44psi @ the fuel rail
20N/12F 50HP
24N/14F 75HP
26N/16F 100HP
31N/18F 150HP

DTN

NOTE #1: 82018 system uses special jetting. Call factory for further details.

NOTE #2: Fuel pump upgrade required. Use ZEX Booster Fuel Pump Kit #82020 for return style fuel system.



put these in because the ZEX wet shots were not in the list.

Tony Vendetta

how much of a shot of NOS would be safe/max on a stock 1.8 beta1 automatic tiburon?

majik

Not sure if stock or not. FYI, He said:

(01:51 PM) Tony Vendetta - like what other mods? i have 4-2-1 headers complete catless exhaust, strut bad, and a cold air intake
(01:59 PM) Tony Vendetta - btw I have 125k+ on my beta1

DTN

55hp or less is safe. Max would be 75 according to manufacturers.... Nitrous adds heat, so if your engine gets too hot, it will melt parts like your piston rings. Play it safe. I run a 55 for messing around, but sometimes I put in the 75 shot at the track. It's a simple matter of changing the nozzles.

JonGTR

I would not run a 75 without upgrading the fuel pump.

DTN

Where are you getting that figure? I've run it just fine.

JonGTR

From my wideband. Did you have a wideband on yours?
NX produces a ton more power than any other kit on the market. I've tried the NOS nozzles and they're shit.

I've also found that you need to retard the timing a great deal at that point also. Not a lot of ECU friendly options for that.

DTN

^^ The newer ZEX nozzles adjust fuel to the level of nitrous being put out. That means you'll always get the stoichometeric ratio, or close to it, no matter what your bottle pressure. That's what they claim at least. I don't see how it can get much better then that. A venturi is a venturi and they suck fuel into the nitrous stream by passing the nitrous at high velocities by the fuel.

My local nitrous shop said they've never seen a problem with anything that came from ZEX. I'm really not worried about a wideband reading. The ZEX kit self tunes. I'd like to get a fuel pressure reading while running nitrous to make sure i'm still at 36psi or higher.

JonGTR

And how does the Zex kit magically know that you're leaning out? Does it include a wideband sensor? It increases fuel pressure, but without a wideband or O2 reading, it's not going to know you're running out of fuel.