a question about the NOS

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RedFordKiller

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I'm new to this forum and have searched for 3 hrs to find the answer to my questions but havent found anything. In the pictures of peoples cars, there is always flames coming out of the exhaust pipe from the nitrous and people are always talking about how it makes your cars top speed higher. When i use it it just makes a hissing noise, and it just boosts the acceleration. Why is this? And dont start going like "oh this is a dumb question" or something like that.
 
Cars can backfire (flames from exhaust) without using nitrous. It's just a byproduct of a highly-tuned car.

The boost in acceleration you're feeling is why the top speed is higher -- try driving until you're in top gear, and then use the nitrous. The added acceleration can take your car to a higher speed than if you hadn't used the nitrous.
 
RedFordKiller
... When i use it it just makes a hissing noise, and it just boosts the acceleration...
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I hope that you were not expecting Vin Diesel to scream "NOOOSSS" and your car explode in 227.512 parts.
:sick:
 
Wolfe2x7
Cars can backfire (flames from exhaust) without using nitrous. It's just a byproduct of a highly-tuned car.

The boost in acceleration you're feeling is why the top speed is higher -- try driving until you're in top gear, and then use the nitrous. The added acceleration can take your car to a higher speed than if you hadn't used the nitrous.
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If your gearbox will permit it...
 
The backfires only show when your down shifting, as its unburned fuel igniting in your exhaust from coming off the accelerater. NOS adds horsepower to your car, therefore allowing your car to accellerate faster by gaining rpms faster. It doesn't raise your cars top speed, it only gives the engine extra power to bring it farther into the higher revs, but cannot bring the car to a faster speed then what its geared for.

Hope that helps.
 
Yup, as said above in a high-performance car it'll have flames coming out of the exhaust (backfire) when you downshift or even if you release the throttle/brake and then press the gas again. Doesn't matter if it has Nitrous, Turbo, or whatever.

Nitrous can help your car's acceleration, but how much it helps really depends on the gearing. If the gearing is too short (too much to the acceleration side) you won't notice a top speed change.
 
Ok, to clear something out,

The backfire is caused by, as someone said, unburned fuel that goes in the exhaust system, then ignites due to the heat, and then it shoot flames out back.

For the NOS part,

NOS, Nitrous Oxide System, N2o, call it what you want, is a really cold gas that is injected in the intake if I'm not mistaken. The purpose is to cool down the incoming air. When air cooles, it gets smaller, so you can put a lot more air in to the sylinder, wich also allows it to burn more fuel. And more air + more fuel = More hp. So, when you press that button you instantly gain some more hp, that will result in faster acceleration, and sometimes greater top speed.

My english isnt that good, but I hope this brings some more understanding to all of you out there who is wondering about the NOS issue..

Regards,
Christian
 
Is that how Nitrous Oxide works?

If so, why not install small air-ducts and connect it to the intake? If so, the cold air would blow into the intake and provide continuous horsepower increases.
 
Ok, Air gets in through the airfilter, and in to the intake, where fuel is mixed in..roughly.. The air wont get any colder than the outside temperature... However the Nitrous Oxide is between 70 and 100 degrees below freezing (Celsius) ..

So the air gets a lot colder.. To take an example.. A friend of mine was on the German Autobahn, and it was very hot outside, so his car wouldnt go faster then 220km/h.. Next day the temperature had dropped a lot, and then he reached 250 km/h.. So air temperature has a great part in engine performance..
 
Condraz23
Is that how Nitrous Oxide works?

If so, why not install small air-ducts and connect it to the intake? If so, the cold air would blow into the intake and provide continuous horsepower increases.
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Uh...that's what a "cold-air intake" is.

In vaporized form, nitrous oxide does indeed condense the intake air, allowing more oxygen to enter the combustion chamber, as Hogstad was trying to say. However, that's not all it does -- what makes nitrous oxide really effective is that when it gets heated up, it splits into nitrogen and oxygen, which provides more oxygen for the combustion process.
 
Wolfe2x7
Uh...that's what a "cold-air intake" is.

In vaporized form, nitrous oxide does indeed condense the intake air, allowing more oxygen to enter the combustion chamber, as Hogstad was trying to say. However, that's not all it does -- what makes nitrous oxide really effective is that when it gets heated up, it splits into nitrogen and oxygen, which provides more oxygen for the combustion process.
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Some NOS systems inject to the cylinders directly, which then goes under a chemical reaction to do what Wolfe2X7 said. It basically provides more Oxygen to get burned up, providing more power. Must say that NOS system is useful in 300mph+ runs!

The unburned fuel comes out when you brake and downshift; thats for sure. Other times, it just appears when you slow down, or when youre in too high of a gear and is trying to accelerate (shifting into 6th and trying to accelerate from a standstill, for example.)
 
N20 is a cold air intake times 1000... :lol:

And it's N20, not NOS... NOS is a brand name... I bet they paid for their name to be used in FnF... now everyone calls N20 NOS... sort of like everyone here calling soda-pop "Coke".

Hogstad
Ok, Air gets in through the airfilter, and in to the intake, where fuel is mixed in..roughly.. The air wont get any colder than the outside temperature... However the Nitrous Oxide is between 70 and 100 degrees below freezing (Celsius) ..

So the air gets a lot colder.. To take an example.. A friend of mine was on the German Autobahn, and it was very hot outside, so his car wouldnt go faster then 220km/h.. Next day the temperature had dropped a lot, and then he reached 250 km/h.. So air temperature has a great part in engine performance..
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I hear you on that... This summer is a killer... at noontime, my car can't push higher than 190 km/h. Last October, on the way to the race track, we were doing 210... :indiff:
 
The backfire is NOT NOS

EVERY car will have an exhaust pipe. whether its on the side. back. or wherever it was. it has an exhaust pipe
 
NOSBLAST
I'm just saying this from nowhere, but some cars can have NOS but there is no exhaust pipe for the backfire to go
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What's this? Nitrous oxide on an electric car? How does that help? :lol:
 
Wolfe2x7
Uh...that's what a "cold-air intake" is.

In vaporized form, nitrous oxide does indeed condense the intake air, allowing more oxygen to enter the combustion chamber, as Hogstad was trying to say. However, that's not all it does -- what makes nitrous oxide really effective is that when it gets heated up, it splits into nitrogen and oxygen, which provides more oxygen for the combustion process.
Click to expand...
That's right. It's just that Oxygen and the Nitrous don't seperate at high temperature. The carbon and hydrogen molecoules 'steal' the oxygen from the Nitrogen as they are considerably mroe reactive.
 

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