Dinan Stage 1 Performance Engine Software - MINI B46/B48 Engine



Part # D900-B46-B48-M-S1
1 Review

Dinan Stage 1 Performance Engine Software - MINI B46/B48 Engine

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This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020.

See Emissions Details
The 3rd Generation MINI carries on the tradition of its predecessors and offers its owners an enjoyable driving experience via the virtue of being compact and nimble. However, stock levels of power are pedestrian for those enamored with maximum performance. This is especially true when compared to its BMW siblings that Dinan has tweaked and improved for decades. With the B46/B48 powerplant shared between both marques it begs the question - what would the MINI platform be like with an extra 50HP or even 75HP to go along with its already gratifying handling characteristics? Extraordinary is the answer the Dinan R&D team has discovered. The B46 on 93 octane and absolutely no other modifications but the Dinan stage 1 tune clocks in with raucous gains of 87 WHP and 109 TRQ. That is nearly 1/2 another MINI's worth of power packed into that diminutive frame. What does this mean for you? Fun. Lots of it. Agility and power, together at last. While increases in power at this scale typically come at a cost to the engine's durability, this is typically due to improper calibrations that are simply after one goal regardless of engine health - maximum power. Dinan's calibrations are safe and reliable without sacrificing long-term reliability or performance. Dinan performance engine software is so much more than just turning up the turbo boost after all. It is a fully re-tuned engine management program that maximizes power while keeping all the MINI factory safeguards in place. In most cases Dinan software engineers also implement their own additional safety precautions in order to guarantee flawless performance that may not have been needed with factory power levels/programming. Protecting your MINI, while giving the most performance, is the definition of "Performance Without Sacrifice". To do just that, drivetrain and engine components are analyzed for strength, and then the calibration is tested on the dyno and in the real world for durability and drivability. This process has been a cornerstone of Dinan software development for decades and a major reason why Dinan performance tunes are often labelled as being the smoothest, factory-like solution in the marketplace.


  • More Power: Max gains of 87 WHP / 109 lb-ft of torque over stock with 93 octane on ‘S’ models. Consult the performance charts for additional octanes and/or detailed data on other vehicle variants.
  • Dinan Stage 1 performance software includes a limited lifetime warranty against defects in the software and provides free updates and reflashes as they become available. Labor or shipping charges are not included in the warranty.
  • Choice of numerous octane calibrations depending on your needs (91, 93 and 100).
  • No required parts. Install on a stock car and receive the full power gains.
  • Full map rescaling for drivability from idle to wide open throttle and everywhere in between.
  • Optimized boost control, cam phasing, fueling, airflow and temperature controls for maximum power output that is also safe and reliable.
  • Top speed governor (VMAX) removed.
  • Aggressive sport mode cooling added for optimum track effectiveness.
  • Downshift Auto-Blip added for DSC off / Sport Mode conditions.
  • Upgradeable from DINANTRONICS Elite via trade-in program. Consult B46/B48 FAQ below for details.
  • Retains all MINI factory engine safeguards and adds additional safety protections such as the stationary rev limiter being set to 4000 RPM and implementation of per gear torque limits.
  • Sport gauges rescaled to reflect higher than stock power output.
  • Stock JCW pops and bangs settings retained (JCW), or implemented (S), depending on application.
Brand Dinan
Dinan Point Value3
Emission Code7
Factory Rated HPS: 189 (211 Measured); JCW: 228 (277 Measured)
Factory Rated Torque (lb-ft)S: 207 (245 Measured); JCW: 236 (280 Measured)
Install MethodDealer
Labor Time (Hours)0.5
Max HP GainS: 98 @ 5500 RPM; JCW: 70 @ 4500 RPM
Max Torque (lb-ft) GainS: 118 @ 2500 RPM; JCW: 132 @ 2500 RPM
Peak HPS: 309 @ 6000 RPM; JCW: 334 @ 6000 RPM
Peak HP GainS: 98 @ 6000 RPM; JCW: 53 @ 5000 RPM
Peak Torque (lb-ft)S: 357 @ 2500 RPM; JCW: 384 @ 2500 RPM
Peak Torque (lb-ft) GainS: 88 @ 4500 RPM; JCW: 55 @ 5000 RPM
Product TypeEngine Software
WarrantyLimited Lifetime Warranty
Part NumberD900-B46-B48-M-S1

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.
ECU Order Form
Select MINI under vehicle type.
Compatability limited to 2019 MY and prior (Pre-LCI). 2020+ MY owners please see note at the bottom of the page. See DME unlock and compatibility notices at the bottom of the product page for information on potential installation/compatibility limitations.
Limited Lifetime Warranty: See Details

Dinan Stage 1 Performance Charts

EngineOctaneSelect Graph Type

Calibration Quick Reference

All info supplied in the table below is 'at the crank' for consistency when comparing data with MINI advertised numbers which are always reported at the crank. For data 'at the wheels' please refer to the appropriate chart from the dropdowns above.

Table also represents all possible ECU software options currently available for the selected platform. Some stages / variants may require additional hard parts to achieve advertised numbers. Please consult the appropriate stages product page for details.

B46 (S)
Stock as Reported by MINI189 HP 207 LB-FT
Stock as Measured by Dinan 211 HP 245 LB-FT
DINAN + / 4YR/50K / $899.95
Dinan + (91 Octane)288 HP 340 LB-FT +79 HP +99 LB-FT
STAGE 1 / LIMITED / $499.95
91 Octane288 HP 340 LB-FT +79 HP +99 LB-FT
93 Octane309 HP 357 LB-FT +98 HP +118 LB-FT
100 Octane313 HP 366 LB-FT +102 HP +127 LB-FT
104 Octane325 HP 380 LB-FT +114 HP +141 LB-FT
B48 (JCW)
Stock as Reported by MINI228 HP 236 LB-FT
Stock as Measured by Dinan 277 HP 280 LB-FT
DINAN + / 4YR/50K / $899.95
Dinan + (91 Octane)329 HP 364 LB-FT +65 HP +111 LB-FT
STAGE 1 / LIMITED / $499.95
91 Octane329 HP 364 LB-FT +65 HP +111 LB-FT
93 Octane334 HP 384 LB-FT +70 HP +132 LB-FT
100 Octane343 HP 391 LB-FT +80 HP +139 LB-FT
104 Octane347 HP 405 LB-FT +85 HP +152 LB-FT


MINI B46/B48 DME's must be unlocked and bench flashed by Dinan. While dealer / retail unlock and flashing tools are in development and will be available in the future, at present, two options are available:

OPTION 1: Visit a Dinan Dealer and purchase the Dinan Flash Software . They will remove and mail the DME to Dinan. We'll unlock the DME, flash the software and ship it back. They'll reinstall the DME.

OPTION 2: Purchase the tune. Send us your DME. We’ll unlock it, install Dinan software, and ship it back. The unlock process is free. Ground shipping to the continental USA is free. Follow the steps below if this is the course you wish to pursue.

  1. Purchase the tune by contacting Dinan via phone at 1-800-341-5480.
  2. Fill out the unlock form and select BMW under the unlock type.
  3. Mail your DME to Dinan, 4800 U.S. Hwy 280 W, Opelika, AL 36801, USA, and include the last 7 of your VIN on the outside of the box along with a copy of the unlock form inside the box.

At no time during the unlocking process is the DME opened or physically modified. If the DME is flashed back to stock, it will need to be unlocked again. Also, vehicle manufacturers issue many DME part numbers and revisions throughout their vehicle lineup. As such, some DMEs may be temporarily unavailable as new parts and/or revisions are released.

CODE CLEARING: Customers doing the DME removal/install process themselves should be aware that in the case a fault code occurs, having the ability to read and erase fault codes is crucial. Failure to be able to perform this task may result in a vehicle that is inoperable. Dinan will not cover any expenses related to not being able to clear codes (towing, equipment rental, etc.).


BOX CODES: The MINI B46/B48 engine and its multitude of variants account for numerous unique box codes across various platforms. While Dinan has created files for many of these permutations, there is a chance you may have a box code that we have not seen. If this happens to be the case we will need to create a file for your vehicle. This process could add up to 7 days to the bench flash process although in most cases it will be turned around within 2 business days.

Pre-LCI/LCI: Current compatability of the B46/B48 engine software is limited to Pre-LCI vehicles (MY 2019 and prior). If you own an LCI MINI and are interested in helping Dinan test compatibilty with your vehicle please reach out to [email protected]. Please note it would require the vehicle and/or the DME to be sent to Dinan in Opelika, Alabama.


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*Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.