Dinan releases their Performance Software for the N55 twin-scroll turbocharged BMW engine. Here are the details:

“After hundreds of hours of hard work by the Dinan engineering team the N55 Performance Software is now available for immediate download via OBDII at all Dinan Dealers around the world.

Dinan, the most trusted name in the BMW aftermarket is now offering the most anticipated Performance Software in years and as always is covered by the most comprehensive and longest warranty, a BMW new car factory matching warranty coverage up to 4 years / 50,000 miles.

It is well known that the N55 engine software has been a tough nut to crack. Our 4 full time software engineers were able to make a blistering fast software tune that will push your guts into your spine, smoke the tires and put a big smile on your face. Using years of experience tuning BMWs for the street as well as winning back-to-back Grand-AM DP Championships and the 2011 24 Hours of Daytona the Dinan team is the best in the business.

Dinan Performance Software is so much more than just tuning up the turbo boost. 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 program is tested on the dyno and in the real world for durability and drivability. Dinan matches the new car warranty coverage for up to 4 years or 50,000 miles, including the possibility of consequential damages. The top speed governor is removed (X5 & X6 top speed, 155 mph), enabling the BMW to achieve its full potential.

+ Substantial Power Increase

+ Only Pure OBDII Software Upgrade On The Market
+ Better Drivability than “Piggyback” boxes

+ Hassle Free Operation

+ Huge Torque Gains Drastically Improves Acceleration

+ No Shipping! Available at ALL +130 Dinan Dealers Around the World

+ No Hesitation Between Shifts

+ Downloads through the BMW diagnostic port, the same way BMW loads software

+ Top Speed Governor Removed, you decided how fast you want to go (X5 & X6 top speed, 155 mph)

+ Factory Matching Warranty Coverage (4year/50,000 mi), no sleepless nights or being scared to go to the BMW dealer

+ Full Map Rescaling, for drivability from idle to wide open throttle and everywhere in between

+ Properly Returned Fuel Mixtures, to save you gas and protect your engine

+ Water Pump Speed Increased, to improve cooling
+ Retain All BMW Factory Engine Damage Safeguards

+ Free Dinan Software Updates for the Life of the Car, if BMW makes an update so do we.

Stage 2 Performance Software
355 Horsepower @ 5300 RPM
401 lb-ft of Torque @ 3500 RPM
Required Parts: None

Currently Available for:
2011, 2012 335i & 335i xDrive E90, E92, E93
2011, 2012 135i E82, E88
2012 X5 xDrive 35i E70
2011, 2012 X6 xDrive 35i E71

Available Soon:
535i & 535i xDrive F10
X3 xDrive 35i F25

[Source: Dinan ]