In the continuing pursuit to baseline components that will give me some idea of the benefits that may or may not come from the use of after-market components I assembled a stock y-pipe with inlets to test on the flow bench.

The intake was not entirely stock, incorporating the RS4 accordion hose and an 85mm MAF sensor housing.  These two components are what I have on hand and are unlikely to detract from the flow numbers generated by any of the down stream components that I am measuring.

The assembled components are a bit unwieldy to mount to the flowbench, but with the help of some bungee cords I was able to get all of the piping in place.

And the results