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      04-12-2010, 05:09 PM   #17
Brigadier General
ersin's Avatar

Drives: 08 IB E92 M3
Join Date: Mar 2008
Location: Maryland

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Originally Posted by M&M View Post
I just realised that we are all saying the same thing. We all agree we need a smaller pulley? And we are all saying the oxygen content is less? I don't follow what we are disagreeing on then? Ersin, I think you are saying the oxygen content is determined by the density not the pressure? Well I think I'm saying the same thing.
The quantity that is critical is the amount of oxygen in the cylinders, by mass. Since the volume of the engine is constant then talking about the density of the oxygen is the same thing as talking about quantity. Pressure affects performance indirectly as it affects density.

Yes, a smaller pulley will give you more boost, we all agree. I was just pointing out that some things that you said were confusing.


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