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So I have a 28i xdrive and just bought the aFe stage 2 intake and air filter for the N20 engine. I installed it last night and it literally took 15-20 minutes. I haven't driven it yet, but by the sound at start up it seems like it'll have a bit of a deeper exhaust note. I don't expect to feel much of a difference as it only adds a few hp and tq, but it definitely looks great! Here are some before and after pictures!
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