Dinan

Performance Tuner

$899.95

SKU: D440-0052-ST1

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

It achieves this by intelligently re-mapping boost, timing, and fuel maps, all while maintaining the integrity of long-term reliability and onboard diagnostic systems. This tuner is designed to be 50-state emissions legal and offers smooth, predictable power delivery. Key features include a plug-and-play installation process that quickly enables and disables the tune via a physical bypass plug. For B48 engines, expect maximum gains of up to +50 HP and +75 lb-ft of torque (crank), with peak performance reaching 247 HP at 5000 RPM and 295 lb-ft of torque at 3000 RPM. For B38 engines, maximum gains are up to +40 HP and +50 lb-ft of torque (crank). This kit is specifically designed for B38, B46, and B48 MINI engines with a production date after December 2014. It is not compatible with John Cooper Works vehicles or those equipped with the B36 engine. Vehicles produced before December 2014 may require the D440-0051 kit due to different connectors. It is crucial to consult the installation instructions to confirm the correct kit for your specific vehicle, as some 2019 models may use earlier connector types. The tuner is backed by a factory-matching 4-year/50,000-mile new car warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Available on iOS & Android

Specifications

BrandDinan
Part NumberD440-0052-ST1
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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