Not to be cotradictory, who me? Dennis Quella's system is as torky as a production unit and just as dependable.
I had heard, but can't confirm, that it can inexplicably experience hot starting problems.
Not to be argumentative either, who me? I think if I dig a little I could find some dyno on IR vs. single plenum.
I seem to remember that there was a measureable difference around 4,500 rpm. (+15hp)
The difference at 7,000 was a bunch.
Who's got a 6,500rpm engine? Not I sir.
A 2v intake isn't going to help me with my A3's. I luv my heads.
I still don't see how those things give you 400hp. The ports go the wrong way.
Also, I should point out that there is a tremendous difference in the runner size of the A3 Weber manifold vs the 4v.
That has to be a plus in making the system respond.