That's something the device itself also offers.
I don't really think there's much more in it.
'Although it's from Princiota or something similar, for €70, the TÜV inspection might be directly registerable with them. However, that alone would likely cause a certain amount of increased thermal stress.'
I just thought it couldn't hurt to try, and that the fuel injectors might not be in perfect condition with over 200,000 km on them. Although, I would say that after using a tank of 'Ultimat Diesel' on the highway, it seemed to run a little better. No, I don't use that stuff often, and I wouldn't claim that it provides any extra power.
Connecting the injectors and turbocharger should result in a more gentle but also greater overall performance. Perhaps it would be worth considering a different intercooler in the near future, maybe something like a Sprinter LLK (charge air cooler).
The nozzles were initially intended as a basic upgrade to provide a certain performance boost, but without being too noticeable.
I'm happy to spend money on my car

.