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Extra 35 HP for 200 bucks...
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<blockquote data-quote="lchan" data-source="post: 279451" data-attributes="member: 11684"><p>hi..i know this is a very old topic, but anyone out there has an old e34 (mine is a m20b20) and at the air filter box inlet behind the headlights (lower air filter box part), there is actually a vortex generator. I have no idea why bmw has it and the only thing i can think off is it generates a centrifuge like flow that actually knocks large particles away and get them to fall to the bottom, increasing the life of the paper filter? I believe the engines after that no longer have this vortex generators?</p></blockquote><p></p>
[QUOTE="lchan, post: 279451, member: 11684"] hi..i know this is a very old topic, but anyone out there has an old e34 (mine is a m20b20) and at the air filter box inlet behind the headlights (lower air filter box part), there is actually a vortex generator. I have no idea why bmw has it and the only thing i can think off is it generates a centrifuge like flow that actually knocks large particles away and get them to fall to the bottom, increasing the life of the paper filter? I believe the engines after that no longer have this vortex generators? [/QUOTE]
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