




CTS Turbo 4" High-flow CAT BMW N55 (Electric Wastegate)
Get the highest power gains from your N55 with the CTS Turbo 4" High-Flow Cat for BMW (Electric Wastegate). Engineered in CAD to drop in where the restrictive factory downpipe sits, it pairs a strong power increase with an incredible sporty tone that stays subtle when cruising and drone-free 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 downpipe software upgrade is strongly recommended. For off-road use only. Stage 2 software is required to avoid a check engine light. Catalytic converters damaged by a "crackle tune" are not covered under warranty.
Application guide (does not fit RHD vehicles)
- F30 BMW 335i & 335xi: production date after 07/2013
- F20/F21 BMW M135i & M135xi: production date after 07/2013
- F32/F33/F36 BMW 435i & 435xi: 2013+
- F22 BMW M235i & M235xi: 2013+
- F87 BMW M2: 2015+
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.
Pairs well with

CTS Turbo 4" High-flow CAT BMW N55 (Electric Wastegate)
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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