Need a formula, about nitrous vs boost Options

[SlowCelica94]

In a very general sense, turbos and nitrous both add more air and fuel to the engine. And both put a certain amount of stress on the internals that can be measured in psi w/ turbos. So we all seem to agree 8psi is safe for the 5s. But we've seen 12psi, forget who. So what would a 50 or 75 shot translater into as far as strees like psi? Meaning, wouldn't a 75 shot be like running 7psi? (round 9-11 hp per psi, 75 shot equals 75hp) I know my equations are creud, so if anyone can clear up, lemme know.

[SlowCelica94]

No one knows this?

[MonsterBOX]

No one knows this?
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ha dude i think ur gonna get a hella lot more than 9psi with nitrous...

[Supersprynt]

Nitrous is an explosive gas, it doesnt add air it takes it replaces it.

[lagos]

the problem with nitrous is that most people dont do the mods that are needed to support it. you stock ecu is going to flip out when it gets a 50hp shot out of nowhere. you need bigger injectors, and some type of tuning.

turbos are a better idea, because it gives you power that u can feel in daily driving, not just in a single joy ride.

[97sccelica]

only way to compair, is to take an engine to a HP where it just bends/breaks a rod or some other part.

lets say for a stock internals 5sfe turboed, even tuned properly so that no detonation will ever happen, that at 265hp, it just breaks.

so thats an increase of 130hp over stock

then to compair, a 130shot of nitrous would apply the same stress.

of course this is very generalized.

This post has been edited by 97sccelica: Feb 8, 2005 - 9:59 PM

[Justin]

the problem with nitrous is that most people dont do the mods that are needed to support it.  you  stock ecu is going to flip out when it gets a 50hp shot out of nowhere.  you need bigger injectors, and some type of tuning.

turbos are a better idea, because it gives you power that u can feel in daily driving, not just in a single joy ride.
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I bet my car had fun with its 75-shot. I can't do it anymore though because my clutch is gone. My friend was running a 100-shot on a stock 7a and it held up. He didn't want it too though they were gonna go 7age till that fell through.

[SlowCelica94]

But with a turbo and daily driving, ur car is always under stress. But with nitrous, its only under stress when u choose it to be. As far as new injectors go, with a wet shot, it has its own lil "injector" so to say. So maybe a bigger fuel pump. You gotta remember these nitrous systems are made to work on stock cars. Doesn't the zex's system just hook to the ecu and reprogram it for the shot?

Where's anaderson?

[shid]

Uhh, slow, the nitrous has its own injector, but the friggin ECU is gonna go nuts when all the oxygen enters the engine from no where, and then the fuel injectors are gonna go haywire tryign to match it.

THATS why you need new injectors, not NO2 injectors, but fuel.

As for damaging to engine, a turbo is constant, where nitrous is from friggin nowhere.

For example. Imagine your body is the car's engine. You're on the people mover in O'hare airport, or disneyland. It's going 2 mph.

If the mover was turbo'd, you'd slowly move up to 100 mph.

Now, if the mover had nitrous in it; all of sudden your body would be propelled to 100 mph- without warning- random.

Which one do you think you'd handle better?

Everytime you run shot your engine, it's akin to shooting your engine out of a gun, there's no build up, no warning to your engine or ECU. Thats why nitrous at low rpms is dangerous, etc.

[SlowCelica94]

but the extra "air" the engine is getting is being paired with the correct amount fuel from the nozzel. Thus the current injectors will handle the normal amount coming in the the nozzle with handle the fuel and nitrous ratio. That's how I understnad it. And I may be wrong. I've just never heard of anyone running different injectors with a wet shot.

[shid]

*nod* Thats right, supposidely on a wet kit you get enough fuel mixed with the NO2. But I wouldn't trust it, and the NOS vs Turbo comments I made still apply; worse, you'll confuse the poor engine with a wet kit

[1bwilson]

Nitrous is an explosive gas, it doesnt add air it takes it replaces it.
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I thought nitrus lowered the tempiture of air causing the air to condence thus giving you more air in the combustion chamber?

[shid]

Nitrous is an explosive gas, it doesnt add air it takes it replaces it.
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I thought nitrus lowered the tempiture of air causing the air to condence thus giving you more air in the combustion chamber?
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Nitrious = N02

All the nitrious does is act as a carrier for oxygen particles; its used as a carrier because it has the side effect of decreasing air temp, and thus increasing psi by two seperate ways. Nitrious does not explode to provide the extra HP; the chemical reaction is still gas + oxygen.

[SlowCelica94]

Nitrous is an explosive gas, it doesnt add air it takes it replaces it.
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Nitrous is not flamable. It said so on my old bottel. I don't know where you pulled that from but my guess is fast and furious. How is nitrous going to pull air out? That's retarded. Nitrous oxide is NOT even flamable. The way nitrous oxide works is when it is heated above about 550 degrees ferinheight it releases the oxygen from the compound thus giving you extra oxygen, with more oxygen you can add more fuel which equals more power. also the cold temp "absorbs" the heat out of the intake air which cools making it more dense, this also gives you more power. if you have any more questions about how nitrous really works feel free to ask. trust me im right on this one. the degree in high performance automotive technolohy on my wall tells me im right. as far as adding bigger injectors, my suggestion is to look at your fuel pressure. if you have an additional fuel injector that turns on with the nitrous you should be fine. if not, you need to figure out if your injectors can handle the additional fuel flow that will be needed with the nitrous. if your injectors can handle a bit more pressure you should be fine, but typically with a stock system they use the smallest injectors they can get away with as this gives you the best idle quality due to the spray pattern. a bigger injector does not spray as well at idle speeds and will have a tendency to drip some of the fuel and give you ****ty idle quality.