barun79

hi guys,
i got a beta II 2.0 engine.what is the max nos i can out into the system ?????
i got a intake and also a cut off exhaust .
cheers

slyderdai

2loud ran a 100 shot in his beta II elantra for a long time. he abused the SH*T out of his car at the track and it is now in the hands of it's new owner with over 150k on it driving fine and dandy.

hyper25

A safe rule to always fallow on nitrous for a new nitrous user is take your stock horsepower and divide it by 2 and thats the biggest shot you will want to run tell you upgrade more parts and learn more about your car.

DTN

Actually, that's the maximum shot you can possibly run.. at that point you're running pretty much on all nitrous. Nitrous is a bit denser then the air we breathe, but when it comes down to it, nitrous is 33% oxygen instead of 21% oxygen. This is an increase of about 33% over stock. Because nitrous oxide is denser, it can pack more air into the area, but you will most likely not be able to fit more then a "100" shot of nitrous into a 150hp engine.

Divide by 3.

radu_rd2

said the guy running a 75shot in a ~140hp engine tongue.gif

DTN

i'm pretty sure alot of it goes to waste, which is why I end up having to clean of my MAF which is upstream.

faithofadragon

hmm i ran a 125 shot when i decided to blow up the wagon

187sks

Nitrous is far more dense than air (even when expanded into gas) and it cools the charge air significantly also. Figuring that nitrous is only good for 33% more air than without nitrous is an incorrect although logical conclusion to come to. The nitrous oxide molecules are denser than 2 nitrogen atoms and an oxygen atom if they all went in separately. Once heated and compressed the molecules break apart and you then have significantly more oxygen than you would have been able to get into the combustion chamber running in an atmosphere with a 2:1 ratio of nitrogen and oxygen.

DTN

I'm just telling you from experience. a 50 shot flows into my 140hp beta. a 75 shot wets my MAF sensor.

My logical conclusion is somewhere between 1/3 and 1/2 of my engine's rated horsepower is where the nitrous and fuel mixture out-flows the engine's capabilities.