Active Autowerke BMW B46 Catted Downpipe

If you're a proud owner of a 2019+ BMW 330i or 430i, you'll want to pay attention to the Active Autowerke B46 Catted Downpipe. BMW's introduction of the valve-tronic, single turbo, direct-injection engine in the later F-Chassis models has brought about a new level of performance potential. However, the restrictive OEM downpipe can hold back your driving experience. This is where the Active Autowerke downpipe comes into play, designed specifically to enhance your vehicle's performance.

Performance Benefits

The turbocharger relies on the efficient evacuation of spent exhaust gases to deliver optimal performance. The factory downpipe in the B46 is a bottleneck, leading to slower turbo spool and less power. The Active Autowerke downpipe is engineered with a robust 3-1/2 inch diameter stainless steel piping that significantly reduces exhaust back pressure. This means quicker turbo spool, increased power, and exceptional durability for your BMW.

High-Quality Construction

Equipped with a GESi G-Sport High Output Catalytic Converter, this downpipe features full 304 stainless steel construction, including the substrate. The GESi HO-Series Gen 2 Catalytic Converters are not only EPA registered but also fully OBD2 compliant, making them suitable for use in 49 states. They ensure reduced emissions and help you avoid pesky "Check Engine Lights," which is a common concern for many drivers.

Key Features

• EPA registered and fully OBD2 compliant for 1996 and newer vehicles (except California)
• Casted upper stainless steel V-Band for precise fitment
• 3-1/2 inch diameter piping for maximum power output
• Quicker turbo spool for enhanced throttle response
• Rated for engines producing between 300 and 500 horsepower
• Withstands temperatures up to 1500°F
• Operational efficiency achieved within 9 seconds of startup
• Easy bolt-on installation with no cutting or welding required
• TIG welded 304 stainless steel construction for durability
• Ultra high flow 400 cell per square inch catalyst
• Furnace-braided stainless steel substrate for outstanding durability
• GESi proprietary precious metal loading technology for reduced emissions
• Ensures safety from harmful emissions and noise for both drivers and passengers

Fitment

• BMW 330i (2019-2022)
• BMW 430i (2019-2023)

Customer Feedback

"I installed the Active Autowerke downpipe on my 2020 BMW 330i, and the difference was noticeable right away. The turbo spools much faster, and I can feel the added power, especially during acceleration. Plus, no more Check Engine Lights!"

"Upgraded my 2021 BMW 430i with this downpipe, and it’s a game changer. The sound is aggressive, and the performance boost is undeniable. Highly recommend for anyone looking to enhance their ride!"