CTS TURBO 4″ RACE or HIGH-FLOW DOWNPIPE FOR BMW N20 4-CYLINDER (2012-2017) F20-F21-F22-F30-F32-F36
CTS Turbo is proud to announce a catless downpipe for F-series BWM 4 cylinder N20 engines.
By removing the factory catalytic converter, you will free up exhaust flow and thus increase power and sound of the engine. Faster turbo spool and less backpressure means the car will feel more responsive and more fun to drive.
Proper tuning by Bootmod3 must be used to remove CEL and ensure proper operation.
Features:
CNC machined flange and direct-fit bracket
Fully TIG welded stainless steel construction
25-35HP increase in power with stage 2 tune (octane dependent)
Aggressive sound
This part is for off-road race use only! Not for N26 engines. Check the sticker under the hood; you have N20 engine it will say ULEV. If it is an N26 engine, it will say SULEV.
CTS Turbo is proud to announce a catless downpipe for F-series BWM 4 cylinder N20 engines.
By removing the factory catalytic converter, you will free up exhaust flow and thus increase power and sound of the engine. Faster turbo spool and less backpressure means the car will feel more responsive and more fun to drive.
Proper tuning by Bootmod3 must be used to remove CEL and ensure proper operation.
Features:
CNC machined flange and direct-fit bracket
Fully TIG welded stainless steel construction
25-35HP increase in power with stage 2 tune (octane dependent)
Aggressive sound
This part is for off-road race use only! Not for N26 engines. Check the sticker under the hood; you have N20 engine it will say ULEV. If it is an N26 engine, it will say SULEV.


CTS Turbo is proud to announce a catless downpipe for F-series BWM 4 cylinder N20 engines.
By removing the factory catalytic converter, you will free up exhaust flow and thus increase power and sound of the engine. Faster turbo spool and less backpressure means the car will feel more responsive and more fun to drive.
Proper tuning by Bootmod3 must be used to remove CEL and ensure proper operation.
Features:
CNC machined flange and direct-fit bracket
Fully TIG welded stainless steel construction
25-35HP increase in power with stage 2 tune (octane dependent)
Aggressive sound
This part is for off-road race use only! Not for N26 engines. Check the sticker under the hood; you have N20 engine it will say ULEV. If it is an N26 engine, it will say SULEV.
The CTS Turbo Catless Downpipe BMW N20 is made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts – unleash your BMW’s potential!
Designed using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance.
Product Details:
Precisely designed and tested on a real car in the real world
T304 stainless steel, TIG welded back-purged construction
Replaces restrictive factory downpipe
Great power upgrade with uncompromising performance
Incredible sporty exhaust sound, subtle when cruising
No drone with factory exhaust
To remove the CEL that will occur, proper tuning software must be used. Use of proper Bootmod3 software upgrade is strongly recommended. For OFF-ROAD use only.