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Choose your options for the Armytrix Full Exhaust System for BMW 4 Series 428i – 245HP – F32/33 (2013 – 2016)
With the push of a button on your ARMYTRIX remotes or smartphone APP allows you to switch between modes.
The automatic mode will open/close the exhaust valves based on predetermined RPM range or turbo pressure, so you don’t have to manually switch all the time – you can also customise your own automatic mode to your preference!
Depending on the vehicle, modifications, and tunes you have, opening valves allow the exhaust gas to flow more freely, as it does not have to pass through any muffler. And with the valves being closed, it can retain the back pressure at low rpm, and maintain the torque that is usually lost with straight piped exhaust systems.
The mobile APP of ARMYTRIX can connect to the OBDII device via Bluetooth, and be used to as a remote controller to easily control valve switch and provide you with real-time monitoring of variuos values of your car, such as rotate speed, fuel, etc. The rpm value in Auto mode can be set to open valves.
DOWNPIPE WITH CUTTING-EDGE FLEXIBLE PIPE TECHNOLOGY
Reduce under-hood temperature and resistant and corrosion
3D SCANS CAR UNDERBODY FOR REVERSE ENGINEERING TO COLLECT ALL HARDWARE DATA, RESULT IN RAPID PROTOTYPING WITH HIGH PRECISION
More than 60% lighter than the exhaust device originally from factory.
High standard T.I.G. hand welding provides the strongest and smoothest welds without welding slag
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Increasing the flow of air to your engine is the easiest way to increase power and keep tho's temps down!