CTS Turbo 3.5" High-Flow CAT BMW N55 (Pneumatic Wastegate)

Maximize exhaust flow on your N55 with the CTS Turbo 3.5" High-Flow Cat for BMW (Pneumatic Wastegate). Designed in CAD to fit perfectly in place of the restrictive factory downpipe, it delivers a strong power upgrade and an incredible sporty note — subtle while cruising, with no drone on the factory exhaust.

Product details

• T304 stainless steel, TIG welded and back-purged construction
• Replaces the restrictive factory downpipe
• Precisely designed and tested on a real car in the real world
• Great power gains with uncompromising performance
• Subtle when cruising, no drone with the factory exhaust

To clear the CEL that will occur, proper tuning software must be used; a Bootmod3 software upgrade is strongly recommended. For off-road use only. Catalytic converters damaged by a "crackle tune" are not covered under warranty.

Application guide

• F30 BMW 335i & 335xi: 2012 - 07/2013
• F20/F21 BMW M135i & M135xi: 2012 - 07/2013

A 135i or 335i with a production date after 07/2013 will need the 4" downpipe instead.

Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.