- Reth Clio cup - no! I meant that the Cup airbox is the same as a regular 172 airbox - its a totally different shape to a Megane item (I also have a Megane 1.6 16v).
- CUPSIZE? - no discernable effect on noise. Power gains are unknown, the car will be on the rollers on Saturday though so if I get 100bhp more than everyone else Ill post here!
The panel filter does save money though, as it can be cleaned and re-oiled, so you dont need to replace the air filter each time you have a service.