Dinan has a long and storied past when it comes to engine tuning having introduced our first engine performance chip in the mid 80's - over 3 decades ago. From those early years with chips, followed by engine software and then to our own external control modules we have become experts in nearly every possible way to extract safe, reliable power from the factory powerplant. While we have long preferred the unheard of control and sophistication capable of being achieved from engine software, over the past 6 years that option was not one afforded to us. That changes now with the re-introduction to flash tuning for Dinan with the S55, and now, N55 engines.

The start of the next generation of Dinan flash tunes, the N55 calibrations are held to the same principles of the past; performance, reliability, and safety. 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. Protecting your BMW while giving the most performance is the definition of "Performance Without Sacrifice". Drivetrain and engine components are analyzed for strength then the calibration is tested on the dyno and in the real world for durability and drivability.

This generation of Dinan flash tunes does differ from the past however in that there are multiple octanes to choose from depending on your needs, desires or limitations. Whether you need a tune for 91 pump gas living in California or want to experience maximum performance on 104 octane race gas at the track or something in between, chances are Dinan has an option for you.

The Dinan Stage 1 Performance engine software is designed for the N55 engine to yield maximum power (for a variety of different octanes), improve drivability, and remove the factory speed governor for unadulterated entertainment.

Stage 1 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.
  
  
  See compatibility / box code notice within the product description for information on potential installation limitations.
  
  Neither the N55 based M2 or X4 M40i nor N55 engines equipped with a pneumatic wastegate are supported with this version of software. D900-N55-S1 is specific to N55's with an electronic wastegate.
  
  

Stage 2 Dinan performance engine tuning for 'F' chassis N55 platforms provides a new found level of exhilaration and enjoyment for you to enjoy. Taking advantage of supporting hardware (Dinan big turbo and an upgraded intercooler), the stage 2 engine calibration takes a significant step up in performance. Yielding nearly 40 WHP / 60 lb-ft of torque more on pump gas over stage 1 (over 70 WHP / 80 lb-ft of torque on race gas) the bump in power equates to a transformation akin to purchasing a completely different vehicle.

While increases in power to 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 stage 2 mappings when used in conjunction with supporting hardware 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.

With factory-like reliability/safety and staggering performance, it's hard to find a reason not to upgrade to stage 2. That "new car" you always wanted is hidden right in front of you. Let Dinan give you the keys so you can enjoy it.

Features:

• More Power. Max gains of 169 WHP / 206 lb-ft of torque over stock on 104 octane and in conjunction with the Dinan big turbo and an upgraded intercooler.
• Dinan Stage 2 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.
• Access to numerous octane calibrations depending on your needs (91, 93, 100 and 104). Switching between mappings would require a reflash at a Dinan authorized dealer.
• 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.
• Sport Cooling mode in sport / manual modes.
• Top speed governor (VMAX) removed.
• Upgradeable from DINANTRONICS Elite via trade-in program. Consult N55 FAQ 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 below for potential limitations.
  
  
  Neither the N55 based M2/X4 M40i nor N55 engines equipped with a pneumatic wastegate are supported with this version of software. D900-N55-S2 is specific to N55's with an electronic wastegate.
  

COMPATABILITY / PERFORMANCE NOTICES

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.

ADVERTISED PERFORMANCE: Advertised performance data is based off of use of the Dinan Big Turbo and the Dinan Dual Core Intercooler in conjuction with the Dinan Stage 2 software. While we do not make an intercooler solution for all N55 vehicles alternative intercoolers may be used but may result in different performance gains or other unforseen limitations in cooling.