Active Autowerke Downpipes w/ GESI G-Sport Cat BMW N20 F3X M228I 328I 428I 2011-2017

The Active Autowerke F-Chassis N20 Signature down pipe utilizes 3.5 diameter stainless steel piping in order to provide more power, quicker spool, and extreme durability. This variant includes a 4″ ultra 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 registered and compliant in 49 states and fully OBD2 compliant. 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.

Features:

• NO CEL when using this downpipe
• Designed to be as unrestrictive as possible
• GESI EPA registered high flow and fully OBD2 compliant
• High flow 4″ GESI cat with 3.50″ piping allows for maximum power output
• Quicker turbo spool – improved power over stock
• Rated for 350 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
• Precise fitment
• Modular design for later upgrades
• Made in Miami, Florida
• Ultra high flow 400 cell per square inch catalyst
• EPA compliant for use on OBD2 vehicles (1996 and newer) except in California
• Full 304 stainless steel construction
• 304 stainless steel substrate in the catalytic converter is furnace braised to the mantle for outstanding durability
• GESi proprietary precious metal loading technology ensures greatly reduced emissions
• Covered by 5 Year / 50,000 Mile Warranty (on catalytic converter)
• Ideal for Forced Induction Applications with no loss of HP
• Both passengers and drivers are safe from harmful emissions and noise

Fitment:

• BMW N20 F3X M228I 328I 428I 2011-2017

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.