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Message: [QUOTE="TARM, post: 89260, member: 578"] Hmm so basically exactly what I said. The only time I see a use is when you are going to be in a known super dusty area such as off roading etc where you do not care about the hit you take in air flow and you are just trying to save some money by preventing the main filter from getting clogged up with the additional debris. But honestly if you shop around you can get the Donaldson for in the $20-$30 range and they tend to last well over a year. Even with heavy driving. The other is when you want bling which while some may use pre filters to actual pre filter IMO the vast majority if they are being honest have them on for looks. [/QUOTE]

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