Paul
  I know intake runner length is very important in a NA engine but for a
turbo charged engine does the intake runners need to be the same length
or does it matter?  If they don't, it opens up some additional
possibilities for intercooler placement.


Mike C.

It probably helps to reduce the BSFC in the turbo engine.
Mazda used tuned manifolds in all the turbo engines it built
right through 2004.

However I agree with you. An inter cooler incorporated into
the intake manifold is a neat way to go. Here is a tuned side port version
but it will also work with a p-port.

Paul Lamar