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      12-22-2012, 09:58 AM   #3
Can't decide....
135Pats's Avatar
Drives: 135i
Join Date: May 2012
Location: Maryland

Posts: 5,503
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Of all the OE parts that are insufficient (hpfp, lpfp, fmic come to mind) the airbox actually isnt that bad...once you clear certain boost characteristics imo youre leaving real power on the table with the stock box, but on stg1 otherwise stock were probably talking about 5whp max for a dci. Lets put it this way: if i hadnt gotten my dci literally for free, id be using the stock airbox, im running stg1+fmic aggressive which is a good deal stronger than the stg1 ots maps. If you dont go dci id just leave it, aftermarket panel filters are a bit dubious imo
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