Dinan + Performance Engine Software - BMW N63 (TU3) Engine



Part # D900-N63-T3-TC-S1-W Be the first to write a review

Dinan + Performance Engine Software - BMW N63 (TU3) Engine



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

See Emissions Details
Even though a step below the S63TU4 and the immense power that that M engine wields, the N63TU3 still shares much of the same V8 architecture and is plenty capable of feats most powerplants can only imagine. Paired with a Dinan + engine calibration yielding max gains on pump gas of +81 WHP and +123 lb-ft of torque, the N63TU3 and the M550i/M850i it powers, instantly evens the playing field and puts the platforms on level footing with the alphas of the brand. The imposing gains are eye-opening on their own but considering that those figures are with no additional modifications or alterations to the catalysts, it's an even more impressive achievement. Going one step beyond simply power and including a factory matching new car 4yr/50k warranty you get a performance value proposition that is hard to fathom. 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 BMW 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 BMW, 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 82 WHP / 123 lb-ft of torque over stock with 91 octane
  • Dinan + performance software matches the factory new car warranty (4year / 50,000 mi) and is the warranty protection commonly associated with the Dinan brand
  • 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, lambda targeting, fueling, airflow and temperature controls for maximum power output that is also safe and reliable
  • Retains all BMW factory engine safeguards and adds numerous additional safety protections
  • Top speed governor (VMAX) removed
  • Torque by gear strategies implemented for maximum power output and traction
  • Sport mode cooling that targets lower coolant temperatures added for optimum track effectiveness
  • Pedal feel improved to naturally align with the increased torque output
  • Sport gauges rescaled to reflect higher than stock power output
  • Torque reserve feature enabled for increased boost pressure during launch control
Brand Dinan
Dinan Point Value3
Emission Code7
Factory Rated HP523 (558 Measured)
Factory Rated Torque (lb-ft)553 (576 Measured)
Install MethodDealer
Labor Time (Hours)0.5
Max HP Gain91 @ 5000 RPM
Max Torque (lb-ft) Gain126 @ 3000 RPM
Peak HP636 @ 5500 RPM
Peak HP Gain50 @ 6000 RPM
Peak Torque (lb-ft)698 @ 3500 RPM
Peak Torque (lb-ft) Gain122 @ 3500 RPM
Product TypeEngine Software
StageDinan +
WarrantyDinan Factory Matching (4yr/50k) Warranty
Part NumberD900-N63-T3-TC-S1-W

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 BMW MG1 under vehicle type
Compatibility limited to 2019-2020 MY's (specifically up to a 06/2020 build date). 2018-2019 M550i's/750i's with the N63TU2 engine & 2021+ MY's with updated encryption are not supported at this time. See DME unlock and compatibility notices at the bottom of the product page for information on additional potential installation/compatibility limitations.
Dinan Factory Matching (4yr/50k) Warranty: See Details

Dinan + Performance Charts

Engine & StageSelect Graph Type

Calibration Quick Reference

All info supplied in the table below is 'at the crank' for consistency when comparing data with BMW 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.

Stock as Reported by BMW523 HP 553 LB-FT 
Stock as Measured by Dinan558 HP576 LB-FT
DINAN + / 4yr/50k / $1,599.95
Dinan + (91 Octane)636 HP698 LB-FT +91 HP+126 LB-FT
STAGE 1 / Limited / $699.95
91 Octane636 HP698 LB-FT+91 HP+126 LB-FT
93 Octane670 HP717 LB-FT+121 HP+145 LB-FT
100 Octane720 HP729 LB-FT+162 HP+169 LB-FT
104 Octane755 HP755 LB-FT+197 HP+195 LB-FT
E85796 HP775 LB-FT+235 HP+215 LB-FT
Only use fuel equal to or higher than specified. Never use a lower octane fuel. Always follow our fuel guide, especially with race fuel and Ethanol, where available. Dynos are for reference only. Results will vary. Contributing factors include the vehicle condition, vehicle setup, dyno type, dyno setup, environmental factors, fuel quality, and more.


2020 MY and prior in the case of the M850i (specifically up to a 06/2020 build date) N63(TU3) DME's must be unlocked and bench flashed by Dinan. 2021 MY vehicles are not supported at this time. While dealer / retail unlock and flashing tools are in development, 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's to Dinan. We'll unlock the DME's, flash the software and ship them back. They'll reinstall the DME's.

OPTION 2: Purchase the tune. Send us your DME's (label each appropriately). We’ll unlock it, install Dinan software, and ship them 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 labelled DME's 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 are the DME's opened or physically modified. Once unlocked the DME's can be flashed through normal dealer tools. If the DME's are 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 N63(TU3) engine accounts 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.


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