hello im interested in purchasing a bmc cda airfilter at the moment as i could possible get a second hand one a bit cheaper. the problem id that i am confused by their sizing of their air filters please bear with me as i need some else's ideas on this i copied this off their web site which gives their sizing for the cda filters The CDA filtering system is a cylindrical shaped Carbon Airbox containing a washable, regeneratable filter. Replacing the original filter box with the CDA one, the fresh air flows directly to the filter and is taken in by the engine through a flow switch with minimum load loss (patented system). The CDA Kit also includes a flexible aluminium tube (60 cm long) to connect the system to a front air inlet. The CDA comes in 2 sizes: Type 1 (70-130) is for engines up to 1600 cc, Type 2 (85-150) for higher levels. Each type is also available in the different diameters needed to connect to the engine. their sizing of say the 70-130 air filter is as follows there is a 70mm outlet on the filter with it being 130mm in length and the 85-150 being an 85mm outlet and 150mm in length now what i want to know is what would be the effect on the 4efe if a 150mmlong filter is used with a 70mm outlet as this is the combination i could get