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Originally posted by Sydneykid

Just in case you think I am going soft on NOS..........

Hi Rev, I don't really agree with your calculations about the costs of NOS versus bigger turbo, ECU etc.  You can't use the NOS on the street or the circuit, but you can use the bigger turbo, ECU etc.  So if you add up all the time you spend driving the car and compare it to the times that you can use the NOS, I think the value for money is pretty average.

And, before you get into not needing the extra power on the street, don't tell me that you never use full thottle anywhere but on the track.  Crikey I used full throttle 6 times (in short bursts) coming to work this morning and I sure used it last night going home.  You have to, to get in front of those AMG things.

Thanks for the responses guys, as usual I learnt a lot.

Well of course we can now get into the 'what I do on the street is legal' arguments.

I can only assume that the bigger turbo and ecu you enjoyed using 'this morning 6 times' was done so below the legal speed limit? Sure it was :O

For starters lets forget about using the power of a bigger turbo on the street, we don't want to encourage others to do illegal things Mr Pot, I Mr kettle certainly can not condone it. Of course on the circuit the whole nos thing is moot, it's not allowed and it's not all that practical. Then again there was an infamous NASCAR series where a certain team used a 'cheater' system hidden in the chassis.

For 'you' the value is average, you like the circuit race thing. For me and others with my pattern of use it's far better value. Shall we agree?

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Originally posted by EnricoPalazzo

I dont think its recommended to ba activates at xxxx RPM

Its more like its recommended to be activated when at WOT or at something like 85% throttle, that wat sufficient fuel is flowing.

But at for example 3000 RPM on the strip, it is very likely that u would b at WOT, therefore that is why someone may have recommended it to u.

Incorrect.

It is recommended to be activated at above 3000rpm for the reasons I have stated before.

It is also recommended to be activated at WOT so nitrous doesn't get deflected off the throttle body back through the intake manifold, through the air filter and around the engine bay.

For stock engines (which is what the "guidelines" are written for), it is recommended to be activated at ONLY WOT, and above 3000rpm.

For strengthened and built engines, these rules can be bent for obvious reasons.

joel,

No you don't need injectors or an ECU with a 'wet' system like mine. It has it's own fuel supply. The only upgrade required on a stock skyline is the fuel pump (mine was pretty close to running out of huff anyway). With an upgraded fuel pump its a 'bolt on'.

*'T' peice off the main fuel line, to the provided fuel pressure reg,into the fuel solenoid.

* Run nitrous line from boot to nitrous solenoid.

*tap nozzle into intake pipe.

* attach braided hose to nozzle from solenoids.

* setup the switches

Thats it pretty much.

Have been following this thread with interest. I too am considering NOS for my skyline, and have done a bit of research. For my 2c

NOS is an inert gas and just reduces the intake temp - means you missed the point. NOS is an oxygen rich gas and hence burns better than air = bigger explosion = more power (air is only 20% oxygen from memory, NOS is about 60%). Yes it will reduce the intake temp which is an added bonus.

Noone seems to have considered using NOS to cool the intercooler - a shot of NOS on the cooler will give a similar effect to putting it in the fridge and further improve its efficiency.

In a wet NOS setup (the only true way to have large HP hits) the NOS and fuel enter the plenum in the correct ratio so you don't need larger injectors etc, but you may need a larger fuel pump to provide the quantity of fuel required.

As for the LEGAL issue - nearly all mods that we do (to 90's - 00's cars) make the car illegal. Lower the car = illegal, change exhaust or turbo = probably illegal. (DMT in SA [and i believe other states too] are about to install/upgrade exhaust testing equipment to ensure emissions meet the ADR specs. Whilst it isn't impossible to modify a car and meet the specs, how many of us go to this trouble. (its not the sort of thing any dyno can test as it is more involved than setting your mixture level).

We are part of a sport, let people do there own thing. You might not like NOS (ok no problem) but that shouldnt be a reason to can others. Personall I never understood why anyone would want to hot up a Gemmi (grandmothers cars if you ask me) but to each their own.

Lets here more on what can be done and less of the knocking.

Have been following this all in one hit this morning at work... A couple of things.

1/ Nitrous Oxide adds power by introducing lots more oxygen to combust in the combustion chamber (funny that). A pleasant side effect of using it is that it can cool the intake charge as well (** This is NOT anything like the main reason why most people use it**)

2/ It is not "fake h.p." OR "cheating" full farken stop. It is a form of forced induction. Get it? No? Okay then.... What does a turbo charger do? What does a Supercharger do? Get it now?!?!? If not, simply re-read point one.

3/ WOT is the only time that Nitrous Oxide should be employed in the application being discussed for a whole host of reasons including what Andrew said.

4/ When all you little kiddies grow up, buy cars, modify them and then grow a brain allowing more than one simultaneous idea to occupy it, let us all know. Until then, please contribute, ask questions and the like but refrain from adding your two cents when what you're saying isn't worth nearly that much.

Remember, it is better to appear ignorant and say nothing than to open your mouth and remove all doubt.

**** DISCLAIMER ****

I base all of my knowledge on this subject from what I have gleaned from association with Robbie Madden from my home town of Wollongong. He's been the Nitrous-guy longer than most of us have been alive.

Adrian

Hi 4door_Sleeper, to do the full ADR testing of emissions takes at least 4 hours, I have done it and that's a quick time. So if in SA that install a unit for testing emissions, they will be able to do

in 8 hours, 5 days a week, 500 cars per year. Last time I looked there was around 1 million cars in SA. That's about 2,000 years to do all the cars, if no one buys a new car in that time.

That's why the RTA emissions testing facility in Sydney has been closed down 3 times in its life. By the time they get around to doing it, your great grandchildren have a new car. The RTA tried to stop you driving your car if it was sent for emissions testing but they kept losing in court as they simply could not do it "in a reasonable time".

As for Skylines passing, I have yet to see a "tuned" one with a good cat have any problems with emissions tests. We just run it on Ultimate, turn the boost down, advance the ignition and lean it out. Big camshafts can be a bit tricky, but nothing that a temporary standard set won't fix. Pass easily.

So, as for "nearly all mods that we do make the car illegal" I would argue that that is not the case. Big turbos aren't illegal, neither are larger intercoolers, large diam exhausts, lowering etc etc. They are only illegal if not done "properly".

But one thing is irrefutable, even if you do a NOS install "properly" it's illegal.

Hi Rev, while I can agree with you about NOS and value for money if your car is only used for drag racing. As soon as you drive it on the street, that goes out the window.

As for "legal, 6 times", yes it was, I have a 40 kph zone that moves to a 110 KPH zone on the way to the warehouse which is 8 k's away. So 2nd and 3rd, then the toll gates, so 1st / 2nd / 3rd and the same on the way back. The seventh time, well the AMG was just being smart. So I had to show him the mathematics, you know the one that goes................

1 Skyline + 1 AMG = 1 Skyline

No officer, I wasn't speeding, just proving a mathematical theory.

As you said REV, we can agree to disagree, it's OK.

Sydneykid, DMT (Dept. Motor Transport) in SA are not overly concerned with the delay to process a vehicle. Over the X-mass months delays of 2-3 months are not uncommon.

The understanding between the police and DMT is that if you have a mod done to your car (ie a new exhaust) it is up to YOU to prove it meets the criteria. The only reason they have not been asking for emissions tests are because they dont have anywhere in the state that is certified to perform the test. I was told (by DMT) that they consider any engine mod (exhaust, large turbo, Nos, intercooler) may have an effect on the emmisions of the motor, and it would be up to the owner to show a certificate of compliance otherwise its off to Regency Park (Defect central) to have them test it and confirm compliance.

Lowering is OK only if the height from the center of the rim to the edge of the gard (top of the curve - you know what i mean) is not less than standard height from the factory. (So in effect lowering a car is ok if you can keep this measurement ie sounds impossible)

As for NOS being ilegal, they tell me having it on the car is only a concern because it would effect your emission figures (provided it is hooked up and vented to atmosphere if it were to leak).

In SA they don't have a problem with you having a full NOS cylinder rolling around in the boot (I believe that in Vic and NSW they can book you for this even if the kit is not connected) or if it is connected if you could prove the car meets the required ADR's. and last time I looked there was no specific ADR that mentions NOS, though there are plenty about emission standards.

Originally posted by 4door_Sleeper

Lowering is OK only if the height from the center of the rim to the edge of the gard (top of the curve - you know what i mean) is not less than standard height from the factory. (So in effect lowering a car is ok if you can keep this measurement ie sounds impossible)

About 2 months ago I saw the official determination by the state parliament, which rattifies ADRs for vehicles in SA and regultions for roadworthiness compliance - and with regard to ride height it states that there must be 100mm clearance between the ground and the vehicle, blah, blah ..... No where does it mention that the height must be as stock.

Hi 4door_Sleeper, some thought follow your posts...........

"DMT (Dept. Motor Transport) in SA are not overly concerned with the delay to process a vehicle."

They will be when you sue them for loss of income cause you can't drive your car for work. That's how it started in NSW.

"Lowering is OK only if the height from the center of the rim to the edge of the gard (top of the curve - you know what i mean) is not less than standard height from the factory."

This is contrary to the Australian Design Rules and certificate of registration requirements. SA is a signatory to the National Act, if they contravine that you can lodge an official protest with the Dept of Transport.

When we certify a new model of car for initial registration with DOT , we have to specify it for minimum height. We allow for the lowest suspension spec we sell, settling, full compliment of passengers, full tank of fuel, full boot of luggage and the maximum load on the largest towbar certified. This is easily 40 to 50 mm lower than the car is unloaded.

None of this applies to low volume imports of course.

"As for NOS beig ilegal"

In NSW it's a road rule, like a speed limit.

Hope that clarifies.

  • 1 year later...

hi mate, my name is kane, i install nitrous oxide as a profession. what i would reccomend is to loose the throttle switch all together and replace it with a button style gear knob or button style steering wheel. this is done by taking the wires that run from the solenoid to the microswitch, and instead running the wires from the soleniod to the steering wheel or gear knob. if u need any help my number is 0415 116 174. kane. oh and i hope it was a NOS system, and mate definitly! invest in a rev limiter, and a rising rate regulator, as over revving and under fueling is always a problem and will be detrimental and a suitable fuel pump no matter how small or big the system is.kane.

:sadam:

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