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Originally Posted by EvoGlynn
Great write up - thanks.
Glad to see you have felt an improvement. I have modified my air box on my 130i, by cutting away the bottom corner and adding an air feed to the BMWP filter. It has made a difference and even on the dyno showed a small gain but most noticeable was how it kept the engine temps down - as you have noticed.
Though, you get the option of 2 different filters, a dry one and the blue one. Does that mean the blue filter is oiled??
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Yeah, the oiled filter allows 75% more airflow over stock, while the the dry filter is like 50% more. Like I said in the review, I never felt any major gains with any bolt-on on any car, but this intake paired with the BMS powerbox seems to make a difference so far. I alos looked at the stock airbox and noticed some things could be modified to at least make it sound different.