Benefits/drawbacks of swirl flap delete?
I'm going to be doing my VCG in a few days, and am tempted to delete the swirl flaps while I'm in there. What are the benefits/drawbacks of this? Obviously BMW put the swirl flaps in there to improve light load efficiency; has anyone who has done this seen a drop in fuel economy? Increase in power (dyno verified)? Or is this just a "I mod my engine because engines mods are cool bro" thing?
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