Valvetronic Designs
Valvetronic BMW M3 E9x V2 Midpipe
Valvetronic BMW M3 E9x V2 Midpipe
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E9x M3 Valvetronic Designs X-Pipe Midpipe
Maximum Flow. Maximum Sound. Maximum Performance.
Overview
The E9x M3 is already a legend, but if you’re chasing the ultimate combination of sound and performance, our Valvetronic Designs X-Pipe Midpipe is your answer. This isn’t your average midpipe—engineered from the ground up, it features a free-flow X merge positioned just after the transmission tunnel and 4 resonators to optimize exhaust scavenging and unlock horsepower gains throughout the entire rev range.
Design & Sound Engineering
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Quad Resonator Setup: Two front resonators to reduce rasp, followed by dual 12-inch rear resonators to smooth exhaust tones and refine the overall sound profile.
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Optional Catted Version: For those seeking a balance of flow and refinement, our 200 CELL EURO 6 certified catalytic converters provide exceptional quality and performance while keeping volume levels in check.
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Performance-Tuned X Merge: Improves scavenging, boosts mid-range torque, and delivers a sharper throttle response.
Whether you choose the fully free-flow version for maximum aggression or the catted version for a more refined experience, this X-pipe is built for those who demand the most from their M3—both in sound and in performance.
Fitment
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2008–2011 BMW E90 M3
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2008–2013 BMW E92 M3
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2008–2013 BMW E93 M3
Features
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Fully mandrel-bent for maximum flow
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CFD & CAD-based design for optimized performance
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Lightweight T304 stainless steel with brushed finish
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Compatible with any aftermarket axle-back
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13.8 lbs lighter than stock
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100% bolt-on installation—no cutting, no welding
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FREE FLOW SYSTEMS NOW SHIP AS A QUAD RESONATED SETUP
Pro Tip
The free-flow version is not for the faint of heart—it’s designed for enthusiasts who want maximum sound and maximum horsepower gains. Choose your configuration based on your desired volume and performance goals.
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).
