ECU Tune for BMW 335i E90 (2010-2011)
(N55 3.0L Inline-6 Twin Turbo) 
 
335i N55 Tuning Potential:
 
Stock power and gains vary based on conditions and state of the vehicle.
 
- - STOCK HP & TQ - -
306 HP / 295 FT-LB (400 Nm)
 
- - STAGE 1 - -
370 HP / 383 FT-LB (520 Nm)
Can be performed on stock 335i
 
- - STAGE 2 - - [+$150]
400 HP / 415 FT-LB (563 Nm)
(Contact for mod requirements)
 
- - ZF6HP TCU Tuning - - [+$349]
BMW Transmission Tuning:
- Increased torque through all RPMs,
- Noticably Smoother Shifts and Acceleration
- Custom shift patterns to match your driving needs
Can be done with any Stage of Tuning!
 
The BMW N55 Engine is a 3.0-liter inline-six engine introduced in 2009. It is the successor to the N54 engine and is currently used in a variety of BMW models, including the 135i, 335i, 435i, M2, and many more. The N55 is a direct injection engine fed with a twin-scroll turbocharger and variable valve timing to produce high levels of power and torque.
 
The ZF 6HP is an 6-speed Hydraulic system Planetary gear automatic transmission. The ZF HP transmissions are still used in a wide range of high end car models including: Aston Martin, most BMW Serie, Audi, Rolls-Royce, Toyota Supra, and many more. The ZF 6HP was first introduced in 2000 and was a popular choice among car enthusiasts for its lighter nature, broad gear ratios, reliable performance capabilities, and fuel efficiency.
 
There are several reasons why you might consider BMW N55 tuning, including:
 
- Increase Horsepower & Torque: The most noticable benefits of tuning your ECU is the increase in horsepower and torque. Even without aftermarket modifications, you can see a significant improvement in your engine's performance, resulting in faster acceleration and a more engaging driving experience.
 
- Improve Fuel Efficiency: While more HP and TQ is often the primary goal of tuning, many tuning parameters can also result in improved fuel efficiency. By optimizing the engine's performance, you can reduce the amount of fuel needed to accelerate and cruise, saving you money at the pump.
 
- Enhanced Reliability: By addressing common issues from the factory and making the engine more efficient, you can reduce the risk of breakdowns and extend the life of your vehicle.