I have not pulled the elbow yet, seems easy enough to do!

I am just going to change out the whole airbox for a cone filter and see how she runs.

My brotherinlaw who is a huge car buff, (built out his 300zx and M6BMW tells me that the cold box with a free flow air filter would be optimal, but he feels that just the cone would be good enough and the hot engine compartment air will not kill off much of the benefit/increase the cone will offer.