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- Dinan Stage 1 Performance Engine Software - BMW 'F' Chassis N55 Engine (Non-M2 / X4 M40i)
Dinan Stage 1 Performance Engine Software - BMW 'F' Chassis N55 Engine (Non-M2 / X4 M40i)
F10/F12/F13/F15/F16/F22/F23 F30/F31/F32/F33/F34/F36
PART# D900-N55-S1
Overview
Features:
- More Power: Max gains up to 95 WHP / 120 lb-ft of torque on the base N55 using 104 octane. Consult the performance charts for detailed data and additional octanes.
- 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 and are at the discretion.
- Access to numerous octane calibrations depending on your needs (91, 93 and 104). Switching between mappings would require a reflash at a Dinan authorized dealer.
- The Dinan Dual Core Intercooler is recommended for improved performance gains, regardless of octane, across the entire power band (where applicable).
- Full map rescaling for drivability from idle to wide open throttle and everywhere in between.
- Top speed governor removed.
- Sport Cooling mode in sport / manual modes.
- Upgradeable from DINANTRONICS - See the FAQ linked below for details.
- Retains all BMW factory engine damage safeguards and adds additional safety protections.
- Torque gains drastically improve acceleration.
- Downloads through the OBD2 Port - See compatability notice at the bottom of the product page.
- Hassle free operation — Install and enjoy.
Specs
Brand | Dinan |
---|---|
Dinan Point Value | 3 |
Emission Code | 7 |
Factory Rated HP | 300 (318 Measured) |
Factory Rated Torque (lb-ft) | 300 (303 Measured) |
Labor Time (Hours) | 0.5 |
Max HP Gain | 105 @ 4500 RPM (104 Octane) |
Max Torque (lb-ft) Gain | 130 @ 4000 RPM (104 Octane) |
Peak HP | 395 @ 5500 RPM (104 Octane) |
Peak HP Gain | 73 @ 6500 RPM (104 Octane) |
Peak Torque (lb-ft) | 430 @ 3500 RPM (104 Octane) |
Peak Torque (lb-ft) Gain | 128 @ 3500 RPM (104 Octane) |
Product Type | Engine Software |
Warranty | Limited Lifetime Warranty |
Part Number | D900-N55-S1 |
Emissions
This part is legal under the provisions of EPA’s memorandum 1A. 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 EPA Memorandum 1A. 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.
COMPATABILITY NOTICE - BOX CODES
The N55 engine and its multitude of variants account for several 100 unique box codes across various platforms. While Dinan has created files for a great number 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 take several days and multiple dealer visits.
Dinan Stage 1 Performance Charts
Platform & Octane | Select 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.
STAGE / WARRANTY / PRICE | HP (CRANK) | TQ (CRANK) | MAX GAIN | MAX GAIN |
---|---|---|---|---|
Stock as Reported by BMW | 300 HP | 300 LB-FT | ||
Stock as Measured by Dinan | 318 HP | 303 LB-FT | ||
STAGE 1 / LIMITED / $499.95 | ||||
91 Octane | 345 HP | 379 LB-FT | +66 HP | +81 LB-FT |
93 Octane | 384 HP | 414 LB-FT | +92 HP | +115 LB-FT |
104 Octane | 395 HP | 430 LB-FT | +105 HP | +130 LB-FT |
STAGE 2 / LIMITED / $549.95 | ||||
91 Octane | 426 HP | 457 LB-FT | +119 HP | +152 LB-FT |
93 Octane | 436 HP | 472 LB-FT | +135 HP | +172 LB-FT |
100 Octane | 468 HP | 502 LB-FT | +168 HP | +205 LB-FT |
104 Octane | 481 HP | 520 LB-FT | +187 HP | +222 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.
Tech Resources
Warranty Information
Applications
*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.
Some parts are not legal for use in California or other states with similar regulations.