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Dinan Performance Engine Chip - 1984-1987 BMW 325e/528e


Part # D900-2711 Be the first to write a review
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Dinan Performance Chips take full advantage of 91+ octane fuel unleashing additional power by recalibrating the ignition timing and air/fuel mixture parameters of the engine management system. Furthermore, the performance software safely raises the factory rev-limit, providing a broader power band and greater road-speed potential in each gear. Significant power gains are achieved at part throttle as well as providing additional performance where the cars are driven most often. Some ECUs, particularly warranty replacements, have soldered-in stock chips and no socket. Dinan will install a socket on the computer for $250 plus shipping. This ECU can come with either a 24-Pin or 28-Pin stock chip. The chip will fit both configurations. Older production models will have an early version ECU which contains 5 matching square stock chips. No Performance Chips are available for this type of ECU.


  • More Power: Max gains of +24 HP @ 4500 RPM and +28 lb-ft TRQ @ 4500 RPM
  • 50 State Emissions legal; CARB EO # D-176-8
  • Rev-limit increased
  • Improved throttle response
  • 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 HP121
Factory Rated Torque (lb-ft)174
Labor Time (Hours)0.5
Max HP Gain24 @ 4500 RPM
Max Torque (lb-ft) Gain28 @ 4500 RPM
Peak HP141 @ 4250 RPM
Peak HP Gain20 @ 4250 RPM
Peak Torque (lb-ft)192 @ 4500 RPM
Peak Torque (lb-ft) Gain18 @ 3500 RPM
Product TypeEngine Chip
Part NumberD900-2711

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

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

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