I dont think Justen has stock internals. He ordered a set of forgie from me. Justin can jump in and give us some details. Justin have thought of using a passby for the supercharger also from the turbo inlet.
To be honest it never really had much in the way of lag so this wasn't an exercise to improve what i had. This was more an experiment to see what twincharghing would deliver and whether this was a good way to develop BIG hp and still have no lag.
That said there is now no lag with a minimum of 5psi available any time the throttle is appiled....even free revving