For what its worth. I running a stock inlet on my vf34 set up. My tuner said its not a restriction. I also run the stock air box with a drop in. The snorkus is deleted. On a back to back dyno, untuned this did gain me almost 10 hp. Boost touches 22psi and gradually tapers to 17. Makes 310HP and 320lbs on a dyno dynamics with a 1.2 correction. Full boost is at 3800. Makes 300hp at redline 7k. Peak torque is around 4400. Its a blast to drive but I do miss the early spool of the td04. Wonder how close the 19t could get on meth.