Dinan Stage 2 Engine Software for BMW 135/335/535 Models
Dinan is pleased to announce the introduction of the anxiously awaited Stage 2 Performance Engine Software for BMW 135/335/535 models. And as always, Dinan matches the new car warranty coverage for up to 4 years or 50,000 miles, including the possibility of consequential damages*. No one offers better performance or backs it up with such comprehensive warranty coverage.
The Dinan Stage 2 Performance Engine Software safely increases turbo-boost pressure from the stock 8.8 to 13.2 psi, along with properly retuned fuel mixtures, ignition timing and full map rescaling. In fact, over 2000 engine management functions have been recalibrated, offering substantial increases in power output while maintaining the civility and reliability expected of a Dinan performance product. Some examples include:
Remapped Water Pump Speeds. In an effort to more effectively control oil and water temperatures, which have been notably excessive even at stock boost pressures, the Dinan software actually increases water pump speeds as boost pressure increases. A much larger, more efficiently ducted oil cooler has also been developed for the 335, further improving heat exchange for lower and more consistent operating temperatures, even with the added boost pressure.
Boost Pressure Control. Increased boost pressure exceeds the turbochargers’ design limitations at higher rpm, potentially shortening their lifespan. Dinan addresses this issue by tapering the boost gradually at higher engine speeds. This approach also addresses the fact that with increased boost at higher rpm the turbocharger temperatures would exceed the intercooler’s ability to cool the intake charge, resulting in a loss of power and compromising the long-term durability of the engine. The tapered boost keeps temperatures within the design limitations so as to optimize output and ensure engine reliability with the added boost pressure.
Top Speed Governor Removed. With Dinan’s software, the turbocharged cars will be capable of achieving their natural top speed as the governor has been removed.
The results of Dinan’s Stage 2 tuning are nothing short of breathtaking, with the added boost and related recalibration, along with the Free Flow Exhaust, producing maximum output of 384 horsepower at 5700 rpm and 421 lb-ft torque at 4300 rpm.
*335i/xi Models: In order to qualify for Dinan’s matching new car warranty coverage, which includes consequential damages, the vehicle MUST be equipped with either a factory oil cooler (not all 335s were equipped from the factory with an oil cooler) or Dinan’s High Capacity Oil Cooler (recommended).
For more detailed information about the new 335/535 engine software, click on the PDF link below:
Press Release 335i software REV A EDITED.pdf
335i Free Flow Exhaust
Dinan's free flow exhaust for the 335 improves exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be and pleasantly aggressive under harder acceleration. 100% stainless steel construction and exacting specifications ensure that the system fits correctly using the factory hangers and will resist corrosion for years to come. The design reduces overall weight as well and features 3.5" polished stainless tips for a tasteful high performance look.
