You ought to look into any shops that do dry ice blasting of throttle bodies instead of walnut shell blasting. CO2 blasting leaves no residue unlike walnut shell blasting since the dry ice sublimates to a gas. This is beneficial for protecting sensitive electronic components and preventing corrosion or damage to throttle body internal mechanisms as CO2 blasting is not as abrasive as walnut shell blasting.

FYI.

 

I've seen plenty of dry ice blasting videos and information, but never have seen anyone use it for intake valve cleaning. Has that been attempted and done successfully?

 

Yes.

 

There's lots of them on YT. Here is a VW getting its intake valves blasted:

Volkswagen Dry Ice Engine Cleaning

There's lots of them on YT. Here is a VW getting its intake valves blasted:

Volkswagen Dry Ice Engine Cleaning

Very impressive process and technology. Definitely more effective and clean compared to walnut blasting.

 

Now to find a shop that does this and is familiar with the vr30....wish me luck.

 

they dont really need to be that familiar with the engine. the intercoolers and intake arent difficult or complicated to remove, not really.