- as much as 10whp/20wft-lbs gain, depending on tuning
- torque peak at lower RPM
- save weight
- better throttle response and faster turbo spool
- limited lifetime warranty
The Evolution Racewerks performance downpipe and sport catalytic converter for F22 M240i, F30 340i, G20 M340i, and F32 440i replaces the stock restrictive ceramic catalytic converter with a higher-flow metallic version. The ER B58 catted downpipe is Made in the USA from 304 grade stainless steel and mandrel-bent piping. It is a direct fit replacement for the stock downpipe, even re-using the original V-Band flange connection and including a flexible pipe section. Brackets and O2 sensor bungs are also stainless and TIG welded. The O2 bung is in the factory location (an additional O2 bung can be added, please inquire). Piping diameters and shapes have been carefully engineered to minimize turbulence and backpressure.
The factory catalytic converter is very restrictive which robs a lot of horsepower and torque but works great for cleaning the exhaust gases. However, the ceramic catalytic material is very dense and expands when it gets hot, further restricting flow. The ceramic has also been known to break down and cause a total blockage of the exhaust. This metallic cat is much less density for more flow - 200 cells per square inch instead of 900. With improved flow the turbo can spin more freely with less strain. This not only makes more power and torque but helps the turbo last longer. Even with fewer cells the sport cat still does a good job of scrubbing the exhaust and will not leave you with toxic black smoke from the tailpipe. These improvements complement the power and torque gains, making this an upgrade with many upsides and very few downsides.
This downpipe is used with the factory gaskets and hardware. Any exhaust after the downpipe will be compatible.
Three coating finishes: mirror polished, brushed silver, or black thermal ceramic. Black ceramic helps to lower underhood temps and minimize heat soak. By containing heat inside the downpipe, exhaust velocity stays higher, improving turbo spool and throttle response.
Note: images show no-cat racing version. Sport Cat version is similar.Notice of Fault Codes/Check Engine Light.
Using any non-factory emissions component may result in a check engine light and fault codes. Although we have heard of cases where no check engine light appeared, these sport cats are not designed to meet any emissions testing and regulations. Race software that is specific to your mods is strongly advised to better adapt your car to a racing environment, keep the fault codes from appearing, optimize power gains, and improve general drivability. Our Epic Motorsports Race software is strongly encouraged to meet all of your tuning goals.Notice of Emissions Non-Compliance.
This product is intended only for racing vehicles that may never be used, or registered or licensed for use, upon a public highway. Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. It's use is prohibited in any motor vehicle that is subject to emissions inspection or control. It is not legal for installation or use on any pollution controlled motor vehicle in any state, province, or jurisdiction governed by, or which has adopted, CARB or EPA regulations. BimmerWorld may confirm a customer's racing license, entry, or track participation and reserves the right to cancel part(s) that are not for legitimate racing or track purposes. Some suppliers have shipping exceptions to certain states or territories, requiring extra delivery time. We will advise you of any delays.
BMW Fitments:2 Series
F22 / F23 (16-20) > M240i
F22 / F23 (16-20) > M240i xDrive3 Series
F30 / F34 (16-19) > 340i
F30 / F34 (16-19) > 340xi3 Series
G20 (2019+) > M340i
G20 (2019+) > M340i xDrive4 Series
F32 / F33 / F36 (16-20) > 440i
F32 / F33 / F36 (16-20) > 440i xDrive5 Series
G30 (17-) > 540i
G30 (17-) > 540i xDriveX Series
G01 (18-) > X3 M40i