[mike@x-ph.com]

Active Autowerke BMW B48 Catted Downpipe

BMW introduced a new valvetronic, single turbo version of its direct-injection engine for the later F-Chassis models beginning in 2016. The Active Autowerke B48 downpipe for the 230i, 330i and 430i helps unleash some of the potential that is restricted by the OEM 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 B48 is quite restrictive, which results in slower exhaust gases and slower turbo spool.

The Active Autowerke F-Chassis B48 Signature down pipe utilizes 3 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 tapers down to 70mm to meet the OEM exhaust system. We never drop the diameter less than the stock diameter of 70mm.

This variant includes a 4.5" high flow GESI catalytic converter that will NOT produce a CEL!

The GESi® G-Sport Ultra High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESi® UHO-Series Catalytic Converters are EPA certified 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® UHO-Series Catalytic Converters are rated for engines putting out between 500 and 850 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 when using this downpipe
  
• GESI EPA registered high flow and fully OBD2 compliant
  
• Casted upper stainless steel V-Band for precise fitment
  
• 3 inch diameter piping allows for maximum power output
  
• Quicker turbo spool
  
• Rated for 500 to 850 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 300 cell per square inch catalyst
  
• EPA certified 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)


Active Autowerke B48 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 Autowerke’s downpipe, your B48 can rev quicker, and deliver more horsepower and torque.

Minimizing back pressure while retaining daily drive-ability was the goal of our B48 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 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 B48!

[IanW555]

How much?

[mike@x-ph.com]

Originally Posted by IanW555

How much?

Check your inbox

[IanW555]

Originally Posted by mike@x-ph.com

Check your inbox

Thanks Mike, how do you rate this against the same from Evolution Racewerks?

[Fr3sh]

Do they make one for n26 engine? 100 guarantee no cel???

[chhappy7]

Originally Posted by Fr3sh

Do they make one for n26 engine? 100 guarantee no cel???

I think the stone exhaust has no CEL guarantee version for N20 at least. I believe it's on x-ph website.

[mike@x-ph.com]

Originally Posted by IanW555

Thanks Mike, how do you rate this against the same from Evolution Racewerks?

The GESI cats used on the Active Autowerke downpipe guarantee no CEL, the ER ones do not

Originally Posted by Fr3sh

Do they make one for n26 engine? 100 guarantee no cel???

Originally Posted by chhappy7

I think the stone exhaust has no CEL guarantee version for N20 at least. I believe it's on x-ph website.

+1 (N20 only)

[Fr3sh]

Aww no n26 love

[mike@x-ph.com]

Originally Posted by Fr3sh

Aww no n26 love

I know

[eff32fl]

Does this work for the B46?

[mike@x-ph.com]

Originally Posted by eff32fl

Does this work for the B46?

It does not

[SeattleLSB]

Does coating this pipe void the warranty?

[mike@x-ph.com]

Originally Posted by SeattleLSB

Does coating this pipe void the warranty?

Not unless the issue was caused by the coating

[Gen13 F36]

Originally Posted by Fr3sh

Aww no n26 love

maybe modify the midpipe so you can use a n20 downpipe.