Dinan Performance Engine Chip - 1985-1987 BMW 535i/635CSi/735i


Part # D900-3521 Be the first to write a review
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Dinan Performance Engine Chips unleash more power by re-programming the fuel mixture and ignition timing parameters of the engine management system. Furthermore, the software safely raises the rev-limit, giving your BMW a broader power band and greater road speed potential in each gear. Significant gains are also achieved at part throttle, making extra power available where you spend the bulk of the time driving.


  • More Power: Max gains of +24 HP @ 5000 RPM and +29 lb-ft TRQ @ 2000 RPM
  • 50 State Emissions legal; CARB EO # D-176-8
  • Rev-limit increased
  • Improved throttle response
  • Smooth and predictable power delivery
Brand Dinan
Dinan Point Value3
Emission Code1
Factory Rated HP182
Factory Rated Torque (lb-ft)214
Labor Time (Hours)0.5
Max HP Gain24 @ 5000 RPM
Max Torque (lb-ft) Gain29 @ 2000 RPM
Peak HP206 @ 5000 RPM
Peak HP Gain24 @ 5000 RPM
Peak Torque (lb-ft)243 @ 4000 RPM
Peak Torque (lb-ft) Gain29 @ 2000 RPM
Product TypeEngine Chip
Part NumberD900-3521

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.