Hi
Is there much heat around your air filter intake?
I have PWR a2w inter cooler for my bug, have you looked at these people
https://www.plazmaman.com/shop/?acti...Items&catId=23
I also read an interesting article about a fusion inter cooler, basically its wax filled, the wax is heated by the intake charge and heat is removed from the intake charge. If you cant read this link I have PDF files of it I can email to you.
Steve