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Valvetronic Designs

Valvetronic BMW G20/G22/G26 M340i/M440i Valved Sport Exhaust System

Valvetronic BMW G20/G22/G26 M340i/M440i Valved Sport Exhaust System

$2,999.00 USD
$3,049.00 USD $2,999.00 USD
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Material


BMW M340i / M440i Valved Exhaust System

3.5" Midpipe, Dual 3" Axle-Back, Pneumatic Valves

Overview

The Valvetronic Designs Valved Exhaust System for the BMW G2X M340i and M440i is the ultimate upgrade for drivers who demand flexibility, performance, and an unforgettable exhaust note. Built with lessons learned from our most celebrated systems, this setup delivers a raw, unfiltered sound when you want it—and refined civility when you don’t.

From the moment you start the engine, you’ll experience the full potential of the B58 powerplant. The system begins with a massive 3.5" midpipe, splitting into unrestricted dual 3" mandrel-bent runs that flow seamlessly to a set of signature Valvetronic Designs tips.

Sound & Control

  • Valves Open: Expect maximum drama—turbospool that’s impossible to ignore, aggressive overrun pops, and a motorsport-inspired tone that sings from idle to redline.

  • Valves Closed: The volume drops by over 25 decibels, transforming the system into a docile, daily-drivable setup perfect for early morning starts or long highway cruises.

Why This System Stands Out

  • Maximum Flow Design: 3.5" front section feeding dual 3" rear piping for unparalleled performance and tone.

  • Unmatched Versatility: Dual pneumatic valves deliver instant transitions from stealth to sport.

  • Premium Build Quality: T304 stainless steel construction with precision TIG welds ensures durability and a flawless finish also available in Grade 5 titanium

Fitment

  • 2019–2026 BMW M340i (G20)

  • 2019–2026 BMW M440i (G22)

Features

  • Constructed from T304 stainless steel or Grade 5 titanium

  • 3.5" midpipe for maximum sound and flow

  • Dual pneumatic-actuated valves for longevity and precision control

  • 21.7 lbs lighter than factory exhaust

  • Fully mandrel-bent for maximum flow

  • Precision TIG welds for strength and durability

  • 100% reversible—return to stock at any time

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ECU tuning is the process of adjusting the engine control unit's software to enhance vehicle performance, efficiency, or fuel economy.

It can, depending on the manufacturer. Many warranties do not cover modifications like ECU tuning.

Use the highest octane fuel recommended for your specific tune to ensure optimal performance and safety.

Yes, a properly tuned car can be used daily, as long as the tune is tailored for reliable, everyday driving.

CPC (Central Powertrain Controller) and TCU (Transmission Control Unit) manage your vehicle's powertrain and transmission systems, respectively.

Map switching allows you to change between different tuning settings (maps) for varying driving conditions without having to retune the ECU.

Yes, if done by a professional using proper tools, ECU tuning is generally safe for your vehicle.

ECU tuning works by modifying the software that controls engine parameters like fuel mixture, ignition timing, and boost pressure to optimize performance.

The process of installing a tune depends on the vehicle’s make and model. Some tunes are installed by connecting a tuning device to your car’s OBD-II port and uploading the tuned software, others may require ECU unlock.

Stage 1 is for vehicles with no modifications, stage 2 is for vehicles with bolt-on upgrades or downpipes installed.

We offer post-installation support, troubleshooting, and guidance on using your tuning software and hardware.

Choose tuning software that is compatible with your vehicle, has good reviews, and suits your performance goals (e.g., reliability vs. max power).