There is no damage to the engine, but the prerequisite must be replaced with a good, trustworthy brand of mushroom head, otherwise the filter is not good, long time to the engine is not good! Here can be recommended, these brands do well in the tuning industry! Japan's HKS winter mushroom, KN's style or Apollo intake kit, in fact, after changing the benefits are also a lot, do not have to change every season to change the air grill, cleaning is also convenient, washing can be, intake effect is also good, and sometimes pull a high turn may also have the sound of the pressure relief valve, it is very good to listen to ah!