PROFILE

The ARM Motorsports N26 Downpipe is the best hardware upgrade to get the most power from your 228i, 320i, or 328i.  The N26 has a stock downpipe with a large catalyst that drastically restricts exhaust flow.  This limits not only the amount of power N26 can make on the stock tune, but also prevents upgrading to a stage 2 tune due to excessive back-pressure.  An N26 downpipe upgrade is the first hardware upgrade every N26 owner should invest in.  Upgrading your downpipe unlocks the most power, increases turbo spool, allows you to run stage 2+ tuning, and improves the exhaust note of your N26 powered BMW. 

CONSTRUCTION

The ARM N26 Catless Downpipe is built with mandrel bent SS304 stainless steel and backed by the ARM Motorsports Lifetime Warranty.  The ARM N26 Downpipe starts with a 4" diameter at the precision CNC machined turbo v-band connection and gradually reduces to a 2.5" diameter to optimize exhaust flow while matching up to the stock mid-pipe using the OEM midpipe clamp.

 By reducing the back-pressure on your turbocharger, the ARM N26 Downpipe prepares your 228i / 320i / 328i for higher boost tunes. Testing on our 328i with only a Stage 1 tune yielded a very respectable 17whp and 25wtq gain.  While switching to a Stage 2 tune gave it an additional 13whp and 12wtq, a total gain of 30whp and 38wtq over Stage 1 alone.

In addition to helping your N26 make more power and torque, it also opens up the otherwise tame exhaust note.  If you're running a stock midpipe and catback section you'll notice a substantial increase in volume under full throttle and a moderate increase in sound during part throttle.  Coupled with a midpipe or full exhaust your N26 can sound quite impressive.  The ARM N26 Downpipe connects to any aftermarket exhaust that is compatible with the stock N26 downpipe.  The ARM N26 Downpipe features two O2 sensor bungs to allow for reinstallation of the OEM oxygen sensors.

With the added power of tuning with the downpipe, you'll see increased IAT's.  Make sure you upgrade your intercooler to keep your newly acquired power gains.  We offer the perfect solution with our F-series FMIC!

IN THE BOX

FITMENT GUIDE