F10, F25, E84, E89 N20 Competition 4 Downpipes
Introducing our new Competition Series 4" Downpipes for your N20 four cylinder turbo engine! Fits all 2011+ 528i, 2011+ X1 s/xDrive20i, 2012+ X3 xDrive20i/xDrive28i or 2011+ Z4 sDrive28i.
http://www.n54tuning.com/f10/f25-n20...-downpipe.html
Key Features:
Now available for the 2012+ BMW 328i N20 Engines!
Horsepower gains of 14 to 16whp average (gains will vary based on modifications of your vehicle).
Higher Max Horsepower Power Curve
Torque gains of 16wtq average (stock boost) up to over 24 wtq (Software upgrade) (gains will vary based on modifications of your vehicle).
Higher Intial Torque Curve. Torque curve hits faster and higher and longer.
Better throttle response and faster turbo spool up times.
Mandrel Bent 4" piping. Smooth transition to the exhaust system.
100% Stainless Steel Construction
100% TIG welded for better quality welds
Precision CNC machined turbocharger V-Band flange.
Stainless steel flex section like factory that allows proper exhaust movement and flexibility.
Mirror polish or brush finish
Available with high temperature black thermal coating to reduce underhood temperatures.
Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug)
Optional EGT sensor bung for EGT gauges (comes with pre-installed plug)
Compatible with the factory or aftermarket exhaust systems.
Track tested durability.
Includes all hardware for complete installation.
Limited Lifetime Warranty.
Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsover. The downpipes will come by default with either brushed or polished finish.