SKU: 68862660391

Active Autowerke Catted Downpipe - BMW / B46 / G2X / 230i / 430i

Sale price$929.16 Regular price$1032.40
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Description

Active Autowerke Catted Downpipe - BMW / B46 / G2X / 230i / 430iPlease note that we install the gasket into the downpipe flange as some customers were damaging the gasket on installation. Active Autowerke BMW B46 Catted Downpipe BMW introduced a new valve tronic, single turbo version of its direct injection engine for the later F Chassis models beginning in 2016 and continuing into the G chassis models. The Active Autowerke B46 downpipe for the 230i, 330i and 430 helps unleash some of the potential that is

Please note that we install the gasket into the downpipe flange as some customers were damaging the gasket on installation.

Active Autowerke BMW B46 Catted Downpipe

BMW introduced a new valve-tronic, single turbo version of its direct-injection engine for the later F-Chassis models beginning in 2016 and continuing into the G-chassis models. The Active Autowerke B46 downpipe for the 230i, 330i and 430 helps unleash some of the potential that is restricted by the OEM downpipe.

NOTE: the cutoff build date of 08/2020 is important as cars produced after that date have a downpipe with different bracket locations. Cars with build date of 08/2020 and earlier have the brackets in a V configuration and should order the F-series downpipe while cars with a build date of 09/2020 and later have the brackets in a straight line. 

If your car was built in the cutover months 08/2020 and 09/2020, please include your VIN in the order so we can ensure you get the correct downpipe.

Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better. Unfortunately, the factory down pipe in the B46 is quite restrictive, which results in slower exhaust gases and slower turbo spool.    

The Active Autowerke F-Chassis B46 Signature down pipe utilizes 3-1/2 inch diameter stainless steel piping in order to provide more power, quicker spool, and extreme durability. We've incorporated a stainless flex joint and then to the ball flare to meet the OEM exhaust system.

This variant includes a 4" high flow GESI catalytic converter that will NOT produce a CEL!

The GESi G-Sport High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESi HO-Series Gen 2 Catalytic Converters are EPA registered and compliant in 49 states and fully OBD2 compliant, perfect for use on 1996 and newer vehicles. GESi proprietary precious metal loading technology ensures greatly reduced emissions, eliminating most "Check Engine Lights". These high flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems.

The GESi HO-Series Catalytic Converters are rated for engines putting out between 300 and 500 horsepower while maintaining a high flow capacity. The reduced back-pressure from this high flow catalytic converter will allow you to maximize your engines horsepower without the harmful emissions. Say goodbye to Check Engine Lights and failed emissions tests!

Please Note: These catalytic converters are not legal for use on vehicles registered in the state of California as a result of California Vehicle Code Section 27156 and 38391.

Features:

  • NO CEL for catalytic efficiency when using this downpipe

  • GESI EPA registered high flow and fully OBD2 compliant

  • Casted upper stainless steel V-Band for precise fitment

  • 3-1/2 inch diameter piping allows for maximum power output

  • Quicker turbo spool

  • Rated for 300 to 500 hp applications

  • Withstands up to 1500 F

  • Can reach operational efficiency within 9 seconds of startup

  • Easily bolts-on no cutting or welding required

  • Durable construction from TIG welded 304 stainless steel

  • Ultra high flow 400 cell per square inch catalyst

  • EPA compliant for use on OBD2 vehicles (1996 and newer) except in California

  • 304 stainless steel substrate in catalytic converter is furnace braised to the mantle for outstanding durability

  • GESi proprietary precious metal loading technology ensures greatly reduced emissions

  • Both passengers and drivers are safe from harmful emissions and noise

  • Precise fitment

  • Made in Miami, Florida

  • Covered by 5 Year / 50,000 Mile Warranty (on shell and tube ends) and 2 year / 25,000 Mile Warranty on the Catalytic core


NOTE: Federal law prohibits the tampering of an emissions control device. Mobile Source Enforcement Memorandum 1A, allows for aftermarket parts to be used in the repair or replacement of emissions control systems, provided the emissions aren't adversely affected. There is no mention or reference to cell density or converter volume dimension. The GESI catalytic converter will produce emissions that will meet the standards set by the EPA, not CARB.


Active Autowerke B46 Downpipe Benefits

The speed of a turbo's impeller wheel is limited by exhaust back pressure. A larger down pipe relieves some of this pressure, resulting in quicker and more efficient spool. With Active Autowerkeu's downpipe, your B46 can rev quicker, and deliver more horsepower and torque.

Minimizing back pressure while retaining daily drive-ability was the goal of our B46 downpipe. Owners can now upgrade to a product that is affordable, reliable, and easy to install.

After months of research and development, our engineers settled on a 3-1/2 inch diameter pipe which utilizes the least number of bends possible. The large volume helps the turbo spool as quickly as possible by eliminating back pressure during spool up. We are ushering in a new era in performance where we maintain air control standards without significant losses in power by using the GESI super high output catalytic converter in our signature downpipe.

Constructed entirely from 304 stainless steel with 1.5MM wall thickness, we are confident that you'll be pleased with how robust and durable this down pipe is. Trouble-free installation and a long lifespan ensure that you'll enjoy many miles of performance with your B46!   

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68862660391

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★★★★★ 5
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This throw is gorgeous! Quality and elegance fill the room. It is well made and looks exactly like the photo and description. Has the black tips which is what I needed to bring my chair to life. It has a soft lining against your skin and i really didn't have to do much when I removed it from its packaging. It was nice and fluffy and looked beautiful draped on my chair. Many reviews said to shake it to bring flattened fur fluffy again but not on this one. I really love the black shading on it, its just enough. Beautifully packaged and arrived next day! Doesn't get too much better than this!
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Reviewed in the United States on May 18, 2026
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Ladywriter
Louisville, US
★★★★★ 5
Beautiful!
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Gorgeous faux fur! Heavy, thick, soft and soothing under the skin, and collapsed on my bed in beautiful, real-looking folds… very satisfying!
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Reviewed in the United States on April 14, 2026
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Leslie
Alexandria, US
★★★★★ 5
Very nice
Color: White & Black, Size: 51"x67", Color: White & Black, Size: 51"x67"
Great quality. It is a very soft, thick throw to snuggle right up into. Looks so good drapped over my recliner that I bought a second one. Black and white throw pictured and folded in half. I am very pleased.
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Reviewed in the United States on April 12, 2026
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M
Dallas, US
★★★★★ 5
Soft and beautiful!
Color: Brown, Size: 60"x80"
Love it! So soft and pretty. A little small for my queen sized bed, I would size up. But beautiful and warm, feels high quality. No shedding.
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Reviewed in the United States on February 8, 2026
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WT
Grantham, US
★★★★★ 4
DO NOT PUT IN DRYER
Color: Cream&grey, Size: 60"x80"
Very soft, very comfortable, very warm, sheds a lot at first. 9/10 for initial impression. So how do you wash it? The instructions say take it to a professional dry cleaner which costs more than the blanket, so that option is out. I've been looking everywhere and everyone says something different, I've ruined two blankets trying to figure it out how to clean them. DO NOT PUT IN YOUR DRYER WITH HEAT, EVER, PERIOD. I ruined my second blanket by putting it in the dryer for just 7 minutes on 'delicate' heat, just don't do it. Even using no heat in the dryer will cause the material to become slightly more abrasive after each cycle. MACHINELESS AIR DRY ONLY. The faux fur has an insanely low fraying point and even getting it moderately warm causes it to become abrasive and have a harsh tangled 'dog blanket' feel to it that is permanent. COLD WASH ONLY ON DELICATE. This seems to have little to no effect on the quality of the blanket. Use high quality detergent with little to no additives for delicates and a laundry bag. Fabric softeners are a big NO, they will shorten the life of your blanket substantially. For colors, The Cream and Grey and Yellow and Grey are very nice and picture accurate. The Camal was far darker than the images would have you believe and it has a greenish copper tint to it. The Ivory looks awful with how they brushed the tips.
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Reviewed in the United States on February 7, 2025

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