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      09-15-2011, 12:09 AM   #4
Bimmer n00b
aznevoviii's Avatar
Drives: none
Join Date: Oct 2006
Location: Maryland

Posts: 629
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I think Burger tuning had a test on all intake,
and result was no gain on any of aftermarket stuffs.
I think drop in filter is a good to have item (no change needed.. same time BMW has wonderful maintance plan where you dont pay for them anyways.)
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