Nice results John and certainly consistant with mine when on Dave's rollers, albeit in the summer and with a Dbilas Hybrid Intake (stock IC like yours though and on B8 T5 F6)..
The scale on mine is a bit out (but you get the idea)..
Love the stealth idea though mate and that's a proper tidy job on that intake too..
Oh and I bet the intake isn't so quiet now..