CTS Turbo 4" High-Flow CAT for BMW N20 4-cylinder (2012-2017) F20-F21-F22-F30-F32-F36

Free up power and sound on your N20-powered BMW with the CTS Turbo 4" high-flow cat. By removing the restrictive factory catalytic converter, you open up exhaust flow for faster turbo spool, less backpressure, and a more responsive, more fun drive — expect a 25–35HP increase with a Stage 2 tune (octane dependent) and an aggressive note to match.

Why it works

• CNC-machined flange and direct-fit bracket
• Fully TIG welded stainless steel construction
• 25–35HP increase with a Stage 2 tune (octane dependent)
• Aggressive sound

Fitment (N20 engines)

• BMW F22 228i and 228i xDrive, N20 2.0L
• BMW F23 228i and 228i xDrive, N20 2.0L
• BMW F30 320i, 320i xDrive, 328i, 328i xDrive, N20 2.0L
• BMW F31 328i xDrive, N20 2.0L
• BMW F32/F33 428i and 428i xDrive, N20 2.0L
• BMW F34 328i xDrive, N20 2.0L
• BMW F36 428i and 428i xDrive, N20 2.0L
• BMW F10 528i and 528i xDrive, N20 2.0L

Proper Bootmod3 tuning must be used to remove the CEL and ensure proper operation. Not for N26 engines — check the sticker under the hood: an N20 engine reads ULEV, an N26 reads SULEV. Verify the downpipe flange on your vehicle before ordering. This part is for off-road race use only.

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.