Although suitably designed for a standard engine, the Megane 225/R26 standard airbox can be found lacking when the power levels have been pushed up by a re-map and other modifications.
The filter is mounted down behind the bumper, well away from any power robbing heat under the bonnet.  Aside from the increase in power, there are improvements' with throttle response and a pleasing, yet unobtrusive increase in intake noise.