The numerous tests run on the track and the use in international races held in the first part of the season have confirmed the efficiency of the new Freeline filter to the point that many drivers taking part in the various National championships, where the new regulations are still to be applied, have nonetheless chosen to use the new filter. The data acquired during the development of the product have also been confirmed by various comparative tests with previously homologated filters. The performance of the new filter has always proved superior. If you consider the marked reduction in noise obtained through its internal design, the result is surprising. But, to get the best performance from the product, some very important measures are to be taken. First of all, assembly: it is to be done by orienting the intake stacks in a perfectly horizontal and non-tilting position, both to facilitate the flows and to avoid leaving material on the track. The Freeline engineers also recommend careful maintenance of the filter. The spongy inside needs to be cleaned with specific products for filters. They are readily available on the market and are the same as those used for car filters. It is important to avoid aggressive products, such as gasoline.The soundproofing material could deteriorate and lose some parts that could in turn damage the mechanics of the engine. Another important recommendation is to avoid removing the internal structure. This operation gives no benefit at all, in that the air flows generated inside worsen rather than enhance performance. Last but not least, be careful with the mix: with ramming air-intake on the 100cc engines, the carburettor mixture is leaned and the situation changes completely in case of non-ramming air intake.