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tons of threads about adding power. just do a search.
I would recommend:
AA or OE tune
MMW cs exhaust
K&N drop in
call it a day.
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2011 335i Sports Package | VRSF FMIC | Cobb AP3 | Dinan Exhaust | BMS Intake | VRSF CP | Lux H8 Angel Eyes | Mtec LED Fogs |
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