Hey guys,

I just got a NOS wet kit for my gst spyder, and i'm really hesitating to intall it! How much is this going to harm my STOCK 4g63 internals??

My car safely bosts 15 psi with the stock turbo and intercooler...supporting mods include:

- fuel pump
- tubular stainless steel manifold
- intercooler pipes
- intake pipe and filter
- full exhast with no cat (down, straight pipe)
- boost controler

I'm a calm driver, I maintain my baby very well, I only got this as a piece of mind...do you think I should upgrade my internals or should it be fine if I used it every now and then and very cautiosly??

Any comments will be appreciated! :)

Any nos system is going to put a lot of stress and strain on your engine, which will shorten the life and wear out your internals faster. I think what your biggest prob is gonna be fuel. If you're running 15 lbs right now and you use nos you're gonna run really lean and hot. --> Very bad.

If you upgrade your fuel system and keep the boost under 20 you shouldn't have any immediate probs with the nos. Just be gentle on your car.

Thanks man.........by upgrading my fuel system do you mean getting a fuel pressure regulator and injectors...cause I already have an upgraded fuel pump?

What pump? If its a 190 you don't NEED an afpr (i would strongly recommend one tho). yes you would need bigger injectors. Im not very familiar with the nos systems, but you will need something to increase the amount of fuel injected when you hit the nos. (something like that is prolly in a kit).

Yeah I have a walbro 190 pump....so the stock 450cc injectors wont do??

Will upgrade before installing....thanks for the advice

i dont recommened doing this like fast n furious with push button. if i was you i would get a nitrous controller that goes on your pedal and at full throttle it will spray or you can get a controller that increase spray as you go through your rpms. i dont recommend just spray the whole thing at once. you will more than likely mess it up bad. and your injectors will have time to compensate when its slowly increasing spray.

hmmmm........that sounds safe and reasonable....I thought when u spray nitrous it simply dumps an amount of gas into the engine....so the controler your talking about would spray gradual amounts and not just dump it at once??

Were can I find such a controler??

Thanks for the heads up dude

I think the biggest issue is the stock turbo. the added volume from the nitrous would probably kill the turbo before the engine

Ok Ok.......so far from the comments I got, my stock injectors and turbo wont do.....thanks alot for the advice, I really don't want to harm my baby!

I will upgrade my injectrs to 550cc and maybe install a EVOIII 16g turbo and a front mount intercooler before even thinking of hooking up this bad boy....

respect to all you dsmr's out there :grin:

to be honest, you don't need the nitrous system. it's just a pain in the ass to keep filling a bottle when you will get plenty of power from that EvoIII.

Your right man....I agree with you....as I mentioned above, I only got it as a piece of mind.....I don't intend to use it at all....only once in a blue moon...

on the other hand, those silly v-tec honda's would have something to think about before they would dare to mess with me!! Purge kit venting to the side of the car.....spray some juice into their faces......HAHAHAHAH :laughing:

Is this the full kit???

I couldn't begin to tell you if its complete. 90% of people who drive these cars don't use nitrous

Well, it is a WET kit, so you may not need to get bigger injectors. The wet system injects gas from one solenoid and the nitris on the other.

HOWEVER bigger injectors are needed if you upgrade your turbo, and a fuel controller and you need to MONITOR AND LOG EVERYTHING! That turbo will put you close to 400 hp, now, your motor can't handle much more than that stock, so if you hit the button, you will blow it.

So unless you build it, a WET kit is a little overkill. Those suckers are good for a couple hundred hp. You can go with a dry kit and you will have up to about 125 hp and you can program your fuel maps to account for it, and they are ALOT easier to install and you will still have your purge to scare off the hondas.

With that said, EVERY SINGLE nitris kit I have ever seen has a little switch that connects to the throttle body. This switch is only activated when you are at WOT. It is NOT safe to run nitris on anything but WOT! and also not safe to run it at any lower than around 3K rpm or above around 6K. That Fast and Furious buttun crap, they put another switch in line with the WOT switch so you have to hit both of them before it activates.

The other system that is gradual is a "progressive" system. It starts out at WOT at a set jet (say 100 hp) then gradually increases to another set jet (say 500), it keeps the rapid strain on the motor to a minimum.

I still don't recommend doing a Nitris and turbo setup. That's two things to tune for and worry about blowing. You should just get a bigger turbo.

In the past before good antilag systems nitrous was only used to increase volume and spool turbos. It was also used at a lower RPM to do this and like hmatt said, this is the worst time. thus, the cause of all the rumors of nitrous killing engines in a short period of time. racers have since advanced immensely and used sophisticated antilag systems and engine management