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Dinan Stage 2 Performance Engine Software - 2007-2016 BMW 135i/335i/335is/535i/Z4


Part # D900-30T Be the first to write a review
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Stage 2 Engine Software is for use with the Dinan Oil Cooler, optimizing performance and drivability from the combination. Dinan Stage 2 Performance Engine Software safely increases turbo-boost pressure, along with properly retuned fuel mixtures, ignition timing, and full map rescaling. Dinan's software also removes the top speed governor so the BMW will be capable of achieving its "natural" top speed. Producing substantial increases in power output while maintaining the civility and reliability expected of a Dinan performance product. In an effort to more effectively control oil and water temperatures, the Dinan software actually increases water pump speeds as boost pressure increases. 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. 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.


  • More Power (with Oil Cooler, where applicable): Max gains of +74 HP @ 4300 RPM and +96 lb-ft TRQ @ 4000 RPM
  • 50 State Emissions legal; CARB EO # D-176-39
  • Improved throttle response
  • Top speed governor removed
  • Properly returned fuel mixtures
  • Remapped water pump speeds to control engine temp
  • Smooth and predictable power delivery

About Dinan

Dinan knows European marques – quite literally – from the inside out. Whether you need hard parts such as exhaust systems or coilovers, or ECU upgrades to unlock your engine's potential, Dinan has the parts to take your BMW, Mercedes-Benz, or Mini to the next level.

Brand Dinan
Dinan Point Value3
Emission Code1
Factory Rated HP300
Factory Rated Torque (lb-ft)300
Labor Time (Hours)1
Max HP Gain74 @ 4300 RPM
Max Torque (lb-ft) Gain96 @ 4000 RPM
Peak HP378 @ 5700 RPM
Peak HP Gain49 @ 5700 RPM
Peak Torque (lb-ft)415 @ 4300 RPM
Peak Torque (lb-ft) Gain91 @ 4300 RPM
Product TypeEngine Software
Required ItemsDinan Oil Cooler (various SKU's) where applicable
Part NumberD900-30T

This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Not compatible with the Z4 sDrive35is (E89) from 2015-2016. The BMW stock oil cooler or the Dinan High Capacity Oil Cooler is highly reccommended (where applicable) to run Stage 2 engine software.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

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