Wagner Tuning N55 Catless/Decat Downpipe (Cat Delete Front Pipe) for BMW 1 Series/3 Series 135i/335i E82 E88 E90 E91 E92 E93 incl xDrive 335xi - High-Flow Stainless 304 Turbo Downpipe Upgrade

Wagner Tuning de-cat front pipe for BMW N55 1 Series and 3 Series

Unlock more performance from your N55-powered BMW with this high-flow de-cat front section from Wagner Tuning. Built from premium stainless steel 1.4301, also known as AISI 304, this freer flowing exhaust upgrade replaces the restrictive factory catalyst to reduce back pressure, improve turbo efficiency and release extra power and torque. Expect sharper throttle response and stronger mid-range punch, ideal for track days and off-road use.

Vehicle compatibility

• BMW 135i E82 and E88 1 Series
• BMW 335i and 335xi E90, E91, E92 and E93 3 Series, including xDrive
• Engine: N55 turbocharged petrol

Key advantages

• Constructed from corrosion resistant stainless steel 1.4301 SS304 for durability
• Direct replacement for the factory front catalyst section, no cutting required
• Lower thermal stress at the turbocharger thanks to reduced exhaust restriction
• Increased power potential by minimising back pressure on the turbine
• Noticeably stronger torque delivery with quicker turbo response
• Precisely engineered for a factory-like fit on OEM mounting points
• Cat-delete design for maximum flow, no catalytic converter included

Real-world confidence from MJ Modifications

We have installed this Wagner Tuning de-cat pipe on customer cars and on our own development vehicles at MJ Modifications in Warwickshire. Fitment has been spot on and feedback on quality and performance has been excellent. If you would like professional installation, coding support or a tailored package, contact us for a fitting quote at info@mjmodifications.co.uk.

Important information

• For off-road and motorsport use only unless an additional catalyst is fitted elsewhere in the exhaust system
• Removing all catalytic converters will almost always make a vehicle illegal for use on public roads
• ECU calibration may be required to prevent engine management light warnings after cat removal

Common search terms

BMW 135i decat, BMW 335i decat, N55 de-cat pipe, N55 cat delete, BMW 1 Series performance exhaust, BMW 3 Series performance exhaust, turbo down pipe upgrade N55, BMW E82 E88 front pipe, BMW E90 E91 E92 E93 front pipe, stainless 304 exhaust pipe, N55 turbo outlet, track use exhaust, motorsport exhaust, BMW 335xi decat, BMW xDrive cat delete, high flow down pipe N55, Wagner exhaust upgrade BMW.