Valvetronic Designs
Valvetronic BMW G20/G22 330i/430i Valved Axleback Exhaust System
Valvetronic BMW G20/G22 330i/430i Valved Axleback Exhaust System
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BMW G2X Valved Axle-Back Exhaust System
Quad-Chambered Muffler, OEM Valve Integration, 3.5" Tips
Overview
The Valvetronic Designs Valved Axle-Back for the BMW G2X platform brings the next evolution in sound customization. Inspired by our renowned F-Chassis systems, this setup offers the flexibility to run OEM valve integration, pair with additional exhaust modifications, or enjoy as a standalone upgrade—all without compromising on fit, finish, or tone.
TIG-welded from T304 stainless steel and designed to utilize factory mounting points and cut locations, the system delivers an OEM+ installation and appearance, with 3.5" tips perfectly filling the rear bumper.
Sound & Control
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Valves Closed: All exhaust gases route through our precision-engineered quad-chambered muffler, delivering stock-level volume for early morning starts, stealthy commuting, and drone-free cruising.
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Valves Open: The muffler is bypassed entirely, freeing the exhaust flow for a deeper, more engaging tone without unwanted cabin drone.
Whether you keep your exhaust otherwise stock or pair it with free-flow components, the system adapts to deliver a driving soundtrack tailored to you.
Why Choose This System
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True OEM+ Fitment: Factory mounting points and cut locations for seamless installation.
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Customizable Sound: Works perfectly as a standalone upgrade or part of a full exhaust build.
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OEM Valve Integration: Operates through your BMW’s drive modes for instant control
Fitment
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2019–2024 BMW 330i (G20)
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2019–2024 BMW 430i (G22 / G23)
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Compatible with 330e (with modifications)
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Compatible with 2025 models (with modifications)
Features
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Fully mandrel-bent for maximum flow
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Precision TIG-welded for strength and durability
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Premium T304 stainless steel construction
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Customizable 3.5" outlet tips for a refined OEM+ look
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OEM electronic valves with rapid open/close function
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Valve integration with factory drive modes
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Extension harness included for plug-and-play operation
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100% reversible—return to stock at any time
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).
