Quote Originally Posted by 99SI
To the original poster, you said that these were not your words, I would like to know whose they are. I am all about sharing good quality information, however, I also like to see credit given where it is due. Please a little note as to where the source of your info came from so the original writer of the info can get their props. Fluid dynamics and the way that heat, diameter of piping, speed of gasses, and so many other factors that go into "efficiency" make this an extremely complex topic. Although, it can be broken down and understood in simple terms, the true complexity of it still exists if you really want to get down to the nitty gritty of understanding the way to make the internal combustion engine the most efficient.
so 2 1/4 will give me efficient backpressure then? i want to beat skylines