Like all RE products, the section 2 x-pipe was designed to be both high quality as well as functional.

Whereas the factory section 2 utilizes two 60mm diameter tubes, with a "H" crossover and small resonator, the RE X-pipe maximizes gas velocity by merging the two smaller tubes into one larger 76mm tube before splitting back into two before the rear muffler.
This efficient system allows for gas velocity to equalize from cylinders 1-3 and 4-6, before entering the muffler chamber, improving sound as well as gas velocity.

As an added feature, the incorporated external "dump" at the end of the X-pipe for total user controllable sound. The optional EVC valve allows the user to control the exhaust sound from stock (completely closed) to race-like loud (completely open) from within the inside of the vehicle. The user has the option of any variable position (partially open), controlling the exhaust volume and flow. It takes less than 3 seconds to fully open to fully closed.

The RE X-Pipe is made to fit exactly like factory. Features include:

• Weighs only 12 lbs. with included blockoff plate (factory is 22 lbs.)
• Optional Electronic Valve Control (EVC) valve allows for user controlled exhaust sound levels with touch of a switch (designed to be mounted inside the cabin, with a discreet momentary switch)
• 100% T-304 stainless steel, full TIG welded construction.
• Version 2 now incorporates a 2-piece design allow for integration of the ROGUE ENGINEERING E46 M3 TRACK EXHAUST
• Includes all hardware require to mount to aftermarket exhausts.
• Will not change ground clearance
• Will not affect emissions
• No permanent modifications required for installation

EVC Kit - ES3509316
The optional EVC sound control kit includes the following:

• US-made EVC Valve (6061-T6 Aluminum body and plate, stainless steel butterfly/shaft, High Temp Steel Gears)
• Custom wiring harness, specifically designed for internal console mounting in E46 M3. All you need is power and ground source for wiring.
• Custom momentary rocker switch
• Hardware and gaskets for mounting valve to RE X-Pipe.
• Stainless steel downturn exhaust tip (diverts exhaust gases towards the ground)