This is a brushed mylar replica of the RS TURBO WAIC TURBO INTERCOOLER sticker as seen on some EJ20 models such as the AUDM RS and some Euro spec models, with the variant for JDM models that had a silver intercooler.
Also here we have the Type RA WAIC Stickers and soon will have some mounting plates if you intend to add these to a plate to raise them as they were on the original gold WAIC seen on the Type RA.
These are brushed metallic laminated for protection.
These can work on any Intercooler in general as it doesn't say WAIC!
Brushed Mylar Foil
Plastisol, latex on JDM sticker