Let me make the point that this is RIGHT before the turbo, and this is an area you shouldn't skimp on, as you can damage the AFM and turbo if you get a cheapy that falls apart. In the end, a K&N is quite cheap since it's great protection, AND it's cleanable and will outlast having the change out cheap air filters.
Spend a lot of money ont he intake, and get cheap on the exhaust if you want to cust costs, this is you're engine's health here...
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