Avus Autosport, Inc. Blog

Dinan, North America’s BMW Tuner, announces the release of the anxiously awaited Performance Engine Software for BMW 335 Models.

After 29 years of critically acclaimed BMW performance tuning, Dinan continues to introduce products that are painstakingly researched, developed and fully tested to meet or exceed the quality and reliability standards of the components they replace. The new Performance Engine Software for the popular BMW 335 continues Dinan’s tradition of performance without sacrifice.

Design

Dinan Performance Engine Software increases turbo boost pressure from 8.8 to 13.2 psi with properly retuned fuel mixtures, ignition timing and full map rescaling. The results are nothing short of breathtaking, providing substantial increases in power output while maintaining the drivability and reliability of a stock BMW.

Dinan’s software design requires no “piggybacking” or adding “secret” boxes to the ECU. The beauty of Dinan’s design is that it is tuned with the proper software tools, not by intercepting and faking signals back to the ECU. The Dinan Performance Engine Software is the only software that addresses all of the key areas important to engine performance and safety. Unlike other “units” currently on the market, there are no compromises as it works with the engine management system as it was designed while preserving all the engine safety monitors.

To top this all off, the ECU for the car does not need to be taken out to load the software for 2007 models (currently the ECU must be shipped to Dinan for installation of the software for 2008 model vehicles). It is loaded into the car directly through the factory OBDII port in about an hour. Any of over 150 Authorized Dinan Dealers nationwide and in Canada can download the software. Simple, the way it should be.

Performance

The Dinan Performance Engine Software increases the turbo boost pressure from 8.8 to 13.2 psi, increasing power output to 384 horsepower and 421 lb-ft torque. With the full Dinan exhaust system (rear mufflers and middle-exhaust X-pipe) included, output is increased to 392hp and 429 lb-t torque. The top-speed governor has also been removed, allowing the car to reach its full potential.

While drivability is as civilized as in stock form, the Dinan Performance Engine Software produces 50% more boost during the same time frame as compared to a stock 335i, enhancing the aggressiveness on spool-up. This creates a driving feel that is unequalled with smooth, rapid power delivery and massive midrange torque.

To even further the performance of the software and preserve engine reliability, Dinan reprograms the electronically controlled water pump to increase flow during high boost usage. In addition, Dinan also offers an optional oil cooler. Twice the size of the stock oil cooler and with more efficient air ducting, the Dinan oil cooler allows for better heat transfer and flow-through than the stock oil cooler, keeping the engine and turbos well within temperature limits, even with the increase in boost. Dinan is also developing compatible products that will further increase power output, such as a larger intercooler and turbo compressors.

Warranty

Dinan is the only BMW tuner that matches the 4 year/ 50k mile new car warranty, including consequential damages. However, either the stock oil cooler or the Dinan High Capacity Oil Cooler are required in order to maintain the matching new car warranty coverage. If the car is currently equipped with the factory oil cooler, Dinan strongly recommends upgrading to the larger unit for reduced and more consistent water and oil temperatures, particularly if the car is driven in a spirited fashion on a regular basis.

Price

The Software carries a suggested retail price of $1999. Installation takes approximately one hour.

The Dinan Way

Dinan has taken the time to comprehensively research what is necessary to tune in the way the factory would. The Dinan Performance Engine Software is a shining example of this no-compromise approach to BMW performance tuning. There are many areas other than power alone that Dinan has addressed to ensure reliability and longevity. Here is just a short list of some of the concerns that were found during research and development.

                        At high loads for extended periods of time, the oil and water temperatures ran much too warm. If these were to be left unchecked it could result in damage to the pistons and cylinder walls. To address this important issue Dinan remapped the water pump speed to increase as boost pressure climbs. In addition, the High Capacity Oil Cooler was developed in order to keep temperatures under control.

                        At higher boost settings in the upper RPM range, the turbos’ RPM limit was exceeded, shortening the lifespan of the turbo. Dinan addressed this problem by tapering boost gradually at high RPM. Future plans include adding larger turbos that can handle higher boost pressures at high RPM without compromising the durability of the turbo.

                        At high boost, the compressor air temperature exceeded the intercooler’s ability to cool the intake charge resulting in loss of power and compromising the long-term durability of the engine. The tapered boost at higher rpm addressed this issue as well. Future plans include the larger turbos as well as a more efficient intercooler, allowing us to increase boost at high RPM without compromising the engine’s durability while further increasing power output reliably.

                        The engine block on the 335i may not be torsionally rigid enough to handle the torque load, causing premature crankshaft failures. Studies are currently in effect to find any weak point in the block and may include block modifications to make it more rigid for the future higher power applications.

                        We believe with proper research it is possible to increase output to well in excess of 400 hp and over 450 lb-ft torque! Naturally, the same attention to detail, drivability and reliability will apply.

Dinan is rarely first to market with its products, largely due to the extensive research and testing involved in development of our products, but we are first when it comes to the quality and real world performance of our products. Proper engineering takes time and research; to do it right means not rushing to market with a product that has not been fully developed and tested. Dinan’s products will reward you with years of driving excitement without the worry associated with typical aftermarket products.