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      09-26-2008, 02:57 AM   #5
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Drives: E90 335i LCI
Join Date: Aug 2008
Location: Orange County, CA

iTrader: (9)

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2009 BMW 335i LCI  [0.00]
2006 E90 330i  [0.00]
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i have the stage 2 non oil, it is great, the sound is the best part, then the extra bit of HP and the throttle response is much improved, but yes the oil from the stage 1 will get on your MAF air sensor and they cost about $1000 so stage 2 is the best if you want to play it safe, oil is better to get more air throught the filter but need to be cleaned and re-oiled, stage 2 you shake or rinse with water and your done.