DINANTRONICS X Performance Tuner for BMW M3C / M4C 2015-2020
S55 Engine (B)
The DINANTRONICS X represents the latest evolution in Dinan's line of inline tuning modules, building on the success of its predecessors. This advanced tuning solution enhances engine performance significantly beyond the limitations of stock programming while ensuring long-term reliability and the proper functioning of on-board diagnostic systems. Notably, the DINANTRONICS X incorporates Bluetooth smart technology, providing users with easy access to adjust power levels directly from their smartphones.
Key Features
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Enhanced Performance:
- Achieves maximum gains of up to +69 HP and +81 lb-ft of torque at the crank, and +62 HP and +73 lb-ft of torque at the wheels, specifically on base models.
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Bluetooth Smart Technology:
- The system is compatible with both Android and iOS devices, allowing for convenient adjustments through a dedicated app. The app download and pairing process are clearly outlined in the installation instructions.
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Advanced Tuning Capabilities:
- The DINANTRONICS X features a more refined tuning strategy than the entry-level DINANTRONICS SPORT model, connecting to additional inputs to deliver enhanced power.
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Customizable Power Settings:
- Users can select from 7 distinct power levels and a bypass setting, providing flexibility for different driving styles and conditions.
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Smooth and Predictable Power Delivery:
- Engineered for a seamless power increase, the system ensures a smooth and predictable driving experience.
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Onboard Diagnostics and Safety Features:
- Maintains onboard diagnostics and factory safeguards, preserving vehicle functionality and remaining unaffected by dealer updates.
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Easy Installation:
- Designed for plug-and-play installation, making it accessible for both novice and experienced users.
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Warranty and Satisfaction Guarantee:
- Backed by a 14-day satisfaction guarantee and a 1-year limited warranty, offering peace of mind for users.
Important Notes
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Mapping Recommendations:
- Users should consult the recommended mapping notice for crucial operational information to optimize performance.
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SKU Specifications:
- For F8x M3/M4 vehicles equipped with the Competition Package, use SKU D440-0137. For base models, use SKU D440-0128.
| Brand |
Dinan |
| Dinan Point Value |
3 |
| Emission Code |
7 |
| Factory Rated HP |
405 (423 Measured) |
| Factory Rated Torque (lb-ft) |
406 (411 Measured) |
| Labor Time (Hours) |
1 |
| Max HP Gain |
69 @ 4500 RPM |
| Max Torque (lb-ft) Gain |
81 @ 4500 RPM |
| Peak HP |
485 @ 6000 RPM |
| Peak HP Gain |
61 @ 7000 RPM |
| Peak Torque (lb-ft) |
490 @ 4000 RPM |
| Peak Torque (lb-ft) Gain |
80 @ 4000 RPM |
| Product Type |
Inline Module |
| Warranty |
Limited 1 Year Warranty |
| UPC |
813725029429 |
| Part Number |
D440-0137 |
Fitment Chart:
| Make |
Model |
Year |
BMW
|
M3 Competition
|
2015-2018
|
|
BMW |
M4 Competition |
2015-2020
|
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order:
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Flexible Returns:
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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Exclusions:
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To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
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Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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