The SeaFoam treatment doesn't work well enough to do anything.
The only way to truly clean it out is to pull the intake and clean by hand. That sounds pretty cheap for a manual cleaning from VW. I'll bet they are still using some sort of chemical even at $400.
IMO your best bet is to find a local place that has experience with this, VW's and Audi's both require the carbon clean. If you have a local VW club ask around and see who can do that work.
There is a local place in here STL that pulls the intake and actually scraps the carbon off the intake and the valves. It's the best $300 I've spend on the car.
The only way to truly clean it out is to pull the intake and clean by hand. That sounds pretty cheap for a manual cleaning from VW. I'll bet they are still using some sort of chemical even at $400.
IMO your best bet is to find a local place that has experience with this, VW's and Audi's both require the carbon clean. If you have a local VW club ask around and see who can do that work.
There is a local place in here STL that pulls the intake and actually scraps the carbon off the intake and the valves. It's the best $300 I've spend on the car.