Nitrous Question guys.....

[1viadrft]

You have the kit... then what?

I was under the assumption that a NOS kit (I guess it's vehicle specific through STILLEN? Which is a dry kit.) along with upgraded ECU and EPROM (?) and TT injectors was required... comes out over $1K w/o labor....

Now I talked to this guy at a shop and he says I don't need all that plus a wet kit is better. He can hook up the nitious release to the actual throttle... that's it. Less than a grand for the kit and installation.

Obviously I don't know jack about nitrous systems... I'm confused. I was under the assumption that EFI nitrous kits were wired to the ECU's speed sensor or throttle sensor. Maybe there is a difference in the kits? Also how would either/or of these systems be hooked up to the engine, etc....????????

[k3smostwanted]

well the dry system will be alot easier on install but supposedly the better performance value is the wet kit. i personally would go with the dry kit beings your gonna be going to a TT later on down the road.

you will need TT fuel injectors if you want to do more than a ~50 shot but i would do injectors reguardless. this is because the N/A injectors are only 259cc...you only want to run about 85% duty on injectors. so yes, yank some out of a TT motor.

you will need an ECU upgrade to let the computer know that it needs to pump extra fuel in because at WOT there will be nitrous coming in.

if you have nitrous without the 2 above it will cause the engine to lean out and ping, just like a turbocharged car. too much air with not enough fuel is bad for your engine...

i was under the impression that the Nitrous kits had a wiring deal that you hooked directly to the gas pedal that told the system that you are WOT and to go ahead and spray.

i dont think you need the Stillen EPROM...i think you can just call up Z1 or whoever and have them program the computer for running nitrous. this will save you some money...

nitrous kits usually have a few different ways of set-up. first you have the bottle that you can turn the knob on or off, then you usually have a toggle switch that arms the system, then you usually have another control that you either push a button to actually spary (like on F&F) the nitrous or the WOT causes the nitrous to spray.

look on TT.net...often there are N/A guys selling a complete nitrous kit with everything you need used because they are swapping to a TT or whatever.

on most dry kits, the nitrous nozzle is actually installed right before the TB. for wet-kits do some research because i have never really looked into it...but maybe it taps right into your fuel line?

[probehtr300]

yeah k3s right on the fact that dry systems are setup with two "spayers" (kind of like two fuel injectors) one in front of each TB, these prayers can be anywhere from 30 to 190 rating on how much they flow. you would want smaller ones.
I have only put nitrous systems on carbureted cars so far but its very similare.
as far as wet systems you tap and hook up a nirous sprayers into each of the armes of the plenum that leads to each cylinder. These sprayers have two holes in them and one releases nitrous and the other fuel. (one for you, because your ussing a sigle stage, on our racecars with dual or tripple stage we run two or three sprayers per cylinder that just kick on and spray even more nitrous.) but that wet system i just described is for carubereted cars so its not quite the same on one of our injected cars. it was just to give you better idea as to how they work.
we also dont use Full Throttle switched connected to the gas pedal, we hook up a small WOT switch onto the base of a carburator so that when the valve is all the way open the valve-arm switches the switch and turns on the nitrus. this could be hooked up the same way on our injected cars with all that linkage between our two TBS hitting the switch.

there are also spool up set-ups that are ussually dry and only spray from X rpm to X rpm, usually like 2000-3200 so that the turbos are spooled up right away, but your not TT yet so dont even worry bout that, although this could be hooked up on an N/A car the same way where it sprays between certain rpms, just not spooling turbos.

i hope this helped some theres just sooo much to nitrous systems im sure i forgot some things.

[ZedEx]

God, George... That's going to be quite expensive brother. Personally I'm partial to the Venom VCN-1000 System, it's electronically controlled, and automatically cuts the Nitrous flow if it reads your Air/Fuel Ratio getting too lean (i.e your motor is at risk of damage).

It may be a bit more expensive... But that's what I'm getting for the Civic, simply because of it's Electronically Controlled system.

But are you seriously considering spending an excess of $1,000 installed just for a NOS System? Sounds a bit steep man.

-Wes

[1viadrft]

Just studying up... there are alot of things to be done before nitrous is thrown in the equation.

So this would be a Wet Kit?



What about direct port?

[1viadrft]

Shit... how do I resize that pic?

[k3smostwanted]

Originally Posted by 1viadrft

Shit... how do I resize that pic?

yeah cant see it their bud. take it to Microsoft Paint.

anyways, if you do indeed go with a nitrous set-up, you can probably get everything done for around $600.

buy a used nitrous system off of somebody...im telling you, they sell often on TT.net. Z1 is offering the stock ECU re-chipped for $250 right now...and thenpick up some used TT fuel injectors and trust me, these are for sale ALL of the time. people are constantly upgrading their fuel injectors and what not so these shouldnt be hard to find at all.

might want to try switching your fuel real to the 94+ one because the Nismo 555cc for the pre 94 are getting very scarce and are constantly on back order. plus, i think the 94+ come in a much better suited 615cc or something like that.

[1viadrft]

Finnally resized it...



So this is a wet system right? You can see where it looks like it's tapped into the fuel line and then runs to the nitrous lines? Tried my best to circle and indentify them. Came out a lil' faint. By throttle I'm asumimg that is the sensor??? And can some-one explain a little more about direct port... i'm assuming this would tap into each runner?

[k3smostwanted]

dude, that set-up on that Z32 is pretty..."rigged". there is shit everywhere. though, it seems to be a dry kit to me...the nozzles have been embedded right into the stock intake tubes.

maybe someone else will know for sure what is going on. probe deals with these nitrous systems all of the time. he can tell us...

[1viadrft]

Oh I should have mentioned that was a test fit... the owner has since then 'cleaned' it up. I thought that was a wet kit though...

When I talked to one of the mechanics at ESCORT racing he also mentioned it going in right before the TB's but I couldn't really converse with him because he spoke only Japanese...

[k3smostwanted]

Originally Posted by 1viadrft

Oh I should have mentioned that was a test fit... the owner has since then 'cleaned' it up. I thought that was a wet kit though...

When I talked to one of the mechanics at ESCORT racing he also mentioned it going in right before the TB's but I couldn't really converse with him because he spoke only Japanese...

ok i did a little research and i found the answer...

That is in-deed a Wet Kit. I was a little confused...sorry for the error.
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ok...a wet kit seems to be the better route now that i look at it for most applications. reason being, the stock fuel system and ECU does not know that the Nitrous is coming in (unless you get the ECU preset for nitrous which Stillen offers). on a dry kit, you are adding a shot of nitrous into the air stream but the stock fuel system may not know this extra burst of oxygen is coming in causing the motor to lean out and detonate. From what i have gathered...Stillen has this covered with their ECU upgrade that will signal the ECU when nitrous has been injected so the ECU can send more fuel depending on what size shot you use.
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now a wet-kit will effectively mix and stabalize fuel from the high pressure fuel line and the nitrous together. so when injected...you already have the fuel to compensate for the extra oxygen the nitrous oxide will add when it defuses itself and adds a huge burst of oxygen. this way will minimize detonation if working properly.
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direct port: a nitrous nozzle would be situated at each cylinder to directly spray nitrous into each individual cylinder. this ensures that each cylinder is getting the same amount of nitrous...

with the design of the Upper Plenum of the Z32 i dont think that with a relatively small shot of nitrous (ie. 75shot) will greatly effect the efficiency of the nitrous. direct port seems to be for people wanting HUGE shots of nitrous and their Intake Manifold cannot evenly disperse the nitrous into each cylinder evenly. Thus, you have some cylinders gettign alot mroe oxygen than other cylinders causing Engines efficiency to decrease greatly.
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so, to sum up...i would change my mind and go with a Wet-Kit, 370cc TT injectors, and your ECU chipped accordingly. better safe than sorry...

but before you get started...if you really have your mind set on modifying the N/A...why dont you get some other things first? i have been told that you can see huge power gains from headers along with the nitrous. since you live in Cali, maybe get some High-Flow Cats put in place of the very restrictive stockers.

[1viadrft]

^ thanks a million, Jason... that's why you're the Mod! LoL

That explains alot of my q's... Like I mentioned earlier I'm just studying up. I have alot of other mods to be done ie, headers, SP2 exhaust and from there I'll figure if I wanna mod the NA any further... just wanted to know what my options were just in case I ever run into a nitrous system...

[k3smostwanted]

Originally Posted by 1viadrft

^ thanks a million, Jason... that's why you're the Mod! LoL

That explains alot of my q's... Like I mentioned earlier I'm just studying up. I have alot of other mods to be done ie, headers, SP2 exhaust and from there I'll figure if I wanna mod the NA any further... just wanted to know what my options were just in case I ever run into a nitrous system...

hey i almost forgot i was a mod. it kind of slipped my mind...

anyways, yeah...i am glad to be of service Georgy. i think you should get a new cat-back to get the mod-bug out of you for a little while and then buy your TT. why spend money on getting your N/A to run with a TT, when you can just save up and buy a TT and mod that?

[1viadrft]

LoL... If... If I do decide to go all out and mod the NA... it's not going to be because I want it to compete with a TT... but to compete with other VG30DE powered Z32's. But I still want to get another Z32 in TT trim. Only time will tell. Though I'm sure if I go all out I would be able to murder some TT's.

First thing is first though. Headers and SP2. Then maybe some Specialty Z Hi-Flow Cats. then let's see what happens. I would really love to have two modified Z's. One NA and one TT. Who knows maybe I'll sell the NA in a bit. But God I love this car!

Back to nitrous...

What size shot would be optimal? I'm thinking anywhere between 50-80 shot? Would that be per TB or would that split? 50-50%? So if I had an 80-shot it would be 40-40 shot per TB? I guess the nitros nozzles are sized to what kinda shot? What sizes are there? I mean is there like a 50-60-70-80-90-100 shot and so on?

[k3smostwanted]

Originally Posted by 1viadrft

LoL... If... If I do decide to go all out and mod the NA... it's not going to be because I want it to compete with a TT... but to compete with other VG30DE powered Z32's. But I still want to get another Z32 in TT trim. Only time will tell. Though I'm sure if I go all out I would be able to murder some TT's.

First thing is first though. Headers and SP2. Then maybe some Specialty Z Hi-Flow Cats. then let's see what happens. I would really love to have two modified Z's. One NA and one TT. Who knows maybe I'll sell the NA in a bit. But God I love this car!

Back to nitrous...

What size shot would be optimal? I'm thinking anywhere between 50-80 shot? Would that be per TB or would that split? 50-50%? So if I had an 80-shot it would be 40-40 shot per TB? I guess the nitros nozzles are sized to what kinda shot? What sizes are there? I mean is there like a 50-60-70-80-90-100 shot and so on?

i think the N/A motor can handle 125 shot without destroying itself but this is just somethign i have read. i would definitely stay under and 80 shot and i guess that would be per TB. so if you wanted an 80 shot, you would go with 40 shot nozzles on both sides. i think if the will is there, you can find a different size nozzle for any shot you would happen to choose. id personally take it easy on the ole gal...id go with a 70 shot (35 per TB).
it would be your transmission i would worry about. the N/A automatic isnt all that strong, if your running TT HP even for a few seconds, it can NOT possibly be good on the transmission.

if you have everything set-up right the engine shouldn't really be disturbed...unless you already have something not behaving, nitrous will just make itself present itself quicker.

all in all, its your car/cars so you can do whatever you want...thought i would just give you my friendly advice, from one 2+2 brother to another.