BMW S63 N63 Catted Downpipes | V8 BMW X5 M and X6 M X5 X6 550i 650i

Active Autowerke is proud to bring you our hand made Signature S63 N63 Downpipes for the twin-turbo V8 BMW X5M, X6M, 550i, 650i, X5, X6 models. 

 

A turbo impeller wheel speed is mostly limited by the exhaust back pressure within the system. If one could eliminate some or most of this exhaust back pressure, the turbo will spool that much faster and effortlessly resulting in quicker engine revs and increased HP. The Active Autowerke Signature down pipes are designed with the intent to maximize power. These down pipes are created with the least amount of restrictions possible by utilizing a full 3" piping throughout with the least amount of bends possible. What you will experience is a faster, more responsive engine because the turbo impeller now has the ability to spool that much faster. The end result is more power. Made from 304 stainless steel the handmade construction process ensures a robust and durable exhaust that will provide trouble free performance with the longevity to match.

This variant includes a 4.5" high flow GESI catalytic converter that will NOT produce a CEL!  GESI has stamped N/GBL/4389/mmyy on these cats as required by the EPA. The number represents the following: N (New) GBL: GESI’s Manufacturer Code / 4389 is the part number registered with the EPA / mmyy: Manufacturing Month and Year.  GESI can correctly claim that this specific technology has met test protocol 40CFR86, and has been verified by a third party laboratory, and most importantly has been registered with the EPA.

NOTE: Federal law prohibits the tampering of an emissions control device.  Mobile Source Enforcement Memorandum 1A, allows for aftermarket parts to be used in the repair or replacement of emissions control systems, provided the emissions aren’t adversely affected.  There is no mention or reference to cell density or converter volume dimension.  The GESI catalytic converter will produce emissions that will meet the standards set by the EPA, not CARB.


****PLEASE PROVIDE VIN # TO ASSURE ACCURACY ***

MAY TAKE UP TO 2 WEEKs BEFORE SHIPPING AS THEY ARE MADE IN HOUSE.

***Before your order ships you MUST sign and return the Off Road Use Only Waiver available HERE. Please email, fax or take a photo of the completed form. You can email it to your sales rep or to info@activeautowerke.com and you can fax it to us at (305) 253-8921***

Features:

  • NO CEL when using this downpipe
  • GESI EPA registered high flow and fully OBD2 compliant
  • Designed with less restrictive curves and more straight flows
  • Full 3.00" diameter piping throughout allows for maximum power output
  • Quicker turbo spool
  • Rated for 500 to 850 hp applications
  • Withstands up to 1500° F
  • Can reach operational efficiency within 9 seconds of startup
  • Easily bolts-on – no cutting or welding required
  • Durable construction from TIG welded 304 stainless steel
  • Precise fitment for installation
  • Full down pipe exhaust support braces relieves load bearing stress
  • Designed to work with OEM O2 sensor heat shield
  • Made in Miami, Florida



Installation Instructions