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      05-02-2009, 03:46 PM   #6
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Drives: E92 BMW 335i
Join Date: Nov 2008
Location: Plainfield, IL

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the stock BMW airbox is very well engineered. I'd like to give the ultimate racing CAI a shot but if the filters are going to stay in the engine bay they need to be enclosed. The best solution might be a drop in filter.

detailing in the greater chicago area.
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website, pertaining to modifications does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.