Just an update:
Apparently it seems this system features a unique separate wastegate dump pipe - which redirects exhaust from the wastegate further back the downpipe. The result is much less turbulence at the exit of the turbo, allowing exhaust gas to flow even more freely.
APR claims much better throttle response, stronger torque delivery in low and mid range and of course, additional peak power.
On the downside, you'll need APR's exhaust-specific software.
