Never saw this post before, we have a fairly long thread in the track subforum related to issues getting a throttle blip during heel-toe downshift.
https://www.1addicts.com/forums/show....php?t=1833057
I will say though that throttle response under normal driving conditions is excellent on my car (N51). I'm running the Stage FP tune, euro airbox, silicone intake boot, and AA headers.