N20 Downpipe for F Series BMW 228i/ 320i/ 328i/ 428i/ 528i - ARM Motorsports X3 (G01) With the dramatic airflow improvement

With the dramatic airflow improvement your turbos are finally able to properly breath improving power levels and spool up speed

—more area

Bmw 740i 2013 to 2015

premium look without compromising your vehicle’s performance

Saves 10 lbs of weight from your BMW

N20 Downpipe for F Series BMW 228i/ 320i/ 328i/ 428i/ 528i - ARM Motorsports X3 (G01) With the dramatic airflow improvementHIGHLIGHTS Gain up to 17whp 25wtq Faster Turbo Spool Improved Exhaust Note Upgrade to Stage 2+ Tuning SS304 Stainless Steel PROFILE The ARM Motorsports N20 Downpipe is the best hardware upgrade to get the most power from your 320i or 328i. The N20 has a stock downpipe with a catalyst that drastically restricts exhaust flow. This limits not only the amount of power N20 can make on the stock tune, but also prevents upgrading to a stage 2 tune due to