It will be interesting to see how it works out because the Neuspeed one uses the original upper pipe which is quite soft and is ribbed. IMO this will get sucked in under boost and the velocity and airflow will be reduced by the standard upper pipe. This will be a good test to see how opening up the elbow improves things.
Although, the bottleneck on the standard metal pipe is so incredibly restrictive this will be a huge improvement no doubt. But will it be better than a full silicone tip...
What did you think of the restriction from the stock downpipe? Lol