Nitrous Kits

[Proximity Motorsport]

Hey people,

Seeing how the aussie dollar is doing so well I have been looking on summit racing america lately and been thinking of getting nitrous. I have been doing some reading and see the key things to run a motor with a wet nos setup is

• Retarded timing
  
• Decreased sparkplug gap (recommended something like 0.7mm gap, I currently use 0.9mm gap
  
• Also recommend colder plugs.. I run NGK copper plugs with a 7 heat range
  
• fuel injection into the plenum, cant find much info on how this works
  

Now im currently building an RB30DET with forged rods, pistion 9:1 compression, RB25 Head, with cams, and mild porting. All the wet kits im seeing on the net are for carby cars. Are these kits suitable? Here is a link http://www.summitracing.com/parts/NOS-05101NOS/

And I just cant find info on where the fuel comes from. Im making a 2L surge tank, I havent welded any bungs on yet but should I put one in to allow for another fuel outlet?

Ok, so I understand the kits have a Master switch to turn nitrous on and off, and a micro switch on the accelerator while on 100% throttle to activate the nos and fuel solenoids to inject the stuff...

EDIT: I forgot to mention, I also have a water meth kit on the car, which im assuming will only enhance the operation of the nos, due to it heating the motor up, the water meth should cool it a bit yeah?

Ok so a turbo motor wants timing, and a nos fed motor wants retard timing, is there a way around this?

The car is a rare weekend warrior and the nos will only be for drag days, just to get that but past a 12 second pass into the 11's. The car has a Vipec ecu, and I'm just wondering about how it will cope with the nos injected... My thoughts are, its going to need to be tuned for nos.. but then what about when its not being used? Does anyone know if vipecs can have two tunes stored to them? Ill have to talk to my tuner a bit more about this, but any info you guys can enlighten me on would be greatly appreciated. It's hard to find info on the net about it because its always carby cars they use it on that dont need ecu tuning!

Thanks guys

Edited September 22, 2010 by choku_dori

[PM-R33]

Negative, completely different kit/setup.

You want a universal wet kit made for a fuel injected car, not a carby. You want something like this:

http://www.holley.com/05130NOS.asp

It is a simple wet kit that is a simple bolt in job, put in the corect size jets and you are done. You don't need to tune for the nitrous unless you are trying to get every bit of performance out of it. Just make sure that the jets you are using are not going to cause the car to ping on the tune that is in the car. You can run dual maps but that is more hassel and not needed for what you want.

You are a bit confused by it all because you have been looking at carby kits (hence your points about retarding the timing and injecting the fuel into the plenum).

Read through these instructions so you get a good understanding of how a universal wet kit works in a EFI car:

http://www.holley.com/data/Products/Technical/199R10295.pdf

However if you want the good stuff, these kits are ment to be some of the best.

http://www.noswizard.com/

Start doing some research on here regarding pulsoids.

http://forum.nitrous-advice.org/

There is a lot to it and I can give you as much help as what I have researched and experienced, but my knowledge is also limited compared to some of the guys on here that have been running nitrous for years.

Unfortunately there is a lot of people on here that havn't had experience with it and have been fed second hand knowledge which is incorrect, so you will most likely hear a lot of negative comments regarding nitrous.

Also you will not need to install the microswitch on the throttle body, the Vipec can switch the solenoids on electronically through a voltage signal from the TPS instead of a mechanical microswitch detecting wide open throttle. This also allows you to select which gears are locked out for the nitrous and what rpm the nitrous activates and deactivates. (Hitting a rev limiter with nitrous engaged is one of the worst things you can do so the rpm limits are VERY handy!).

If you do your research, aren't greedy with running big jets and have a few safety precuations installed to make it run safely you will get good use out of it and won't experience some of the horrors which are assosiated with nitrous.

Good luck with it

Edited September 22, 2010 by PM-R33

[Proximity Motorsport]

Thankyou, didn't expect such a useful post. Ill have a read of the websites a bit better tomorrow when I'm awake, but this definately looks like a good way to get that extra bit of speed down the quater mile Im sure I'll be in contact with you again mate.

[The Mafia]

The Vipec can also switch maps very easily, and by that, I mean switch maps that a tuned specific to Nitrous.

Just like if you install Dip switches on your dash to some inputs. This is to allow you to switch to other maps (for different fuel, rookie driver etc), and in the N02 case, the Vipec "knows" when these special maps are needed and will switch to them. (ie, When the nitrous is activated).

[cobrAA]

Which brands out there can be trusted?? Is NOS any good or it's a rice brand?

[Dumpe]

I have used zex nos before..very impressed with the solenoids hidden in a enclosed case...

[PM-R33]

The best are ment to be the pulsoids from Noswizard http://www.noswizard.com/product_list.php?id=2

Having said that though, the NOS ones are good for your average person. If you were using it a lot and had quite an extreme setup than yeah I would probably go with the pulsoids.

If one of my solenoids ever fails i'll probably replace it with a pulsoid just to give it a go.

[WHITER33GTS-T]

My kit is NOS brand. Its run thru my Haltech ecu to come on at a set revs and turn off at a boost level. Mine isnt used for top end just to help midrange.

[WARLORD]

i run a zex wet nitrous system and water meth to stop any problems they run well together.

http://www.rbracing-rsr.com/waterinjection.html (info) http://www.alcoholinjectionsystems.com/a56/Optimize-Your-Nitrous-System-With-A-Water-Methanol-Injection-System/article_info.html