You've modified your 135i or 335i a good amount, but you're still just not making those big power numbers. You have the exhaust, the software, the intake... what's missing? Downpipes.
aFe Race Downpipes for the 135 & 335 Feature:- Gain 28 horsepower and 28 ft-lbs of torque to the wheels
- 3/8" flanges are sturdy and leak-free
- Pipes widen in the center for maximum flow
- Flawless 304 Stainless Steel
- Beautiful and sturdy welds
- Solid construction, built to last
- Brushed finish - don't pay for polishing you'll never see!
- Bolt on fitment fits to exhaust & O2 sensors
- This product removes the catalytic converters and is therefore for race only. Not approved for street driving
Applications- 2008-2010 E82/E88 135i
- 2007-2010 E90/E92/E93 335i
; "BMW AFE N54 335i/135i DOWNPIPE")
