Strange Mud
Autocross Champion
- Location
- Small Town CT
- Car(s)
- Assorted
there is a patent from VW that claims it's the heat from extended high rpm......I'll see if I can find the post. I'm not convinced it works but it's easy to do. I feel it worth the effort.I don't see how an Italian tune up would do anything for the backside of the valves where it's needed. For a non GDI engine yes.
Jim