DinanTronics Stage 4 Tuner for BMW | F30 | 335i | N55 (MWG w/o MMPK) (NLA)

Part# D440-1638-ST4

Stage 4 (DINANTRONICS Performance Tuner in conjunction with Dinan Intake, Exhaust, Intercooler & Big Turbo) Maximum Power: 426 HP, 418 lb-ft of torque.

In addition to increasing boost and optimizing the fuel and ignition data, the DinanTronics Power Module is tuned for the Dinan supporting modification, specifically the upgraded intercooler and big turbo kit on the N55. The Dinan tuner box plugs into the existing sockets on your engine computers The original wiring harness plugs into the Dinan tuner box. There is no cutting or splicing into wires and the whole harness is completely reversible at any time.

Because the DinanTronics module plugs directly into the engine computer, it can control the data from every sensor on the engine - not just the two or three that other piggyback-style modules use. Instead of only modifying a boost and RPM sensor, the Dinan power module sends a modified signal for fuel and ignition tables, target Lambda (AFR), exhaust temperature, knock sensors, and more. It has the ability to correct short term fuel trim and ignition timing errors so even as the boost increases through the whole RPM range the engine mapping remains where it should. Not only does it make a lot of peak power, but it's also a smooth and consistent power gain over the entire RPM band. The Dinan tuner module is the most sophisticated on the market and is the only one that is 50-state legal.

Installation is plug and play but requires access to the entire engine compartment. The engine computer(s) is part of the intake manifold so access is tight. The Dinan module is installed under the radiator support and the harness has to be run to each computer. Detailed instructions are included but professional installation is strongly advised if you're not used to working around your engine.

Note: This kit is currently NOT for cars equipped with BMW M-Performance software (MPPK). For MPPK equipped cars there is a separate part number. The vehicle also needs to be equipped with an mechanical wastegate. Any 335i with a production date before 07/2013 should have a mechanical wastegate. Only a visual identification is 100% accurate however. Please consult the wastegate identification guide HERE to accurately identify what is on the vehicle. HERE to accurately identify what is on the vehicle.

Benefits of the DINANTRONICS Stage 4 Performance Tuner for BMW N55 EWG Engines w/ MMPK:

  • +123 HP @ 5500 RPM, +114 lb/ft @ 5500 RPM
  • Won't void or negate your warranty
  • Emissions legal in all 50 states
  • Plug & play installation in two hours or less
  • Quick, easy, and discrete installation
Includes Tuning For:
  • Dinan Heat Exchanger/Intercooler
  • Dinan Big Turbo Upgrade


  • F30 BMW 335i / xDrive - N55 3.0L MWG WITHOUT MMPK

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