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these downpipes provide a significant increase in power and torque over the OEM catted downpipes

This is for the all-in M240i enthusiast

The ARM F80 M3 Charge Pipes replace the OEM plastic S55 charge pipes

the factory version reveals its shortcomings

• ARM Aluminum Adapter Pipes

the ARM N63/N63TU downpipes mount up to the turbos and midpipes with the same precision as you would expect from the factory 750i downpipes

emissions testing procedure

• CNC Turbo Couplers

HOW DOES THE PROCESS WORK

• Increase HP / TQ

(Please note: While other charge pipes may work

0L BMW F34 340i xDrive B58 3