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Custom MHD calibration · N55E · N55F

N55 Custom MHD Tuning

135i · 335i · X5 xDrive35i · X6 xDrive35i · M2 · M135i and 7 more

Refined power for daily drivers and hybrid builds — tuned for smooth response, safe torque control, and repeatable performance.

Choose your generationFind Your Tune
Platform
N55 (E-Series) · N55 (F-Series)
Setups
6
Base calibration
From $300
Delivery
Remote, worldwide

N55 (E-Series) and N55 (F-Series) setups and pricing.

The E-Series and F-Series N55 run different DME families, and boost control changed from a pneumatic to an electronic wastegate around 2013-2014. They are separate calibrations, priced separately. Each price is the base calibration from the live catalogue. Fuel and hardware are listed as published for each setup.

All pricing
N55 Custom MHD Tuning setup

Choose your generation's setup to carry it into Find Your Tune. Not sure which you have? Find Your Tune identifies it from the car.

Find Your Tune

Supported hardware and fuels.

  • Stage 1 / Stage 2
  • Downpipe
  • Intercooler
  • Charge pipe
  • Hybrid turbo upgrades
  • Pump gas (91/93)
  • E blends (setup dependent)
  • Upgraded fueling (as applicable)

Flash, log, review, revise.

  1. 01IntakeWe collect mods, fuel, and goals to match your real use case.
  2. 02Custom Base MapA safe baseline built for your setup and drivability.
  3. 03Log & ReviewWe validate boost control, timing, and fueling on your car.
  4. 04RefineWe revise for smoother power, better response, and reliability.
The full process

Which cars.

From each platform's own vehicle table. The VIN confirms the platform before anything is written.

  • N55 (E-Series)135i, 335i, X5 xDrive35i, X6 xDrive35iSome chassis and years are also listed under N54. The VIN confirms which engine.Chassis and years
  • N55 (F-Series)M2, M135i, M235i, 335i, 435i, 535i, 640i, 740i, X3 xDrive35i, X4 M40i, X5 xDrive35i, X6 xDrive35iSome chassis and years are also listed under N54. The VIN confirms which engine.Chassis and years

N55 Custom MHD Tuning questions.

More answers
Will this work on a daily driven N55?
Yes — most N55 customers are daily drivers. We prioritize smooth torque and safe calibration.
Do I need a downpipe?
No. Stage 1 is designed for stock hardware. A downpipe typically enables Stage 2 targets.
Do you tune N55 hybrid turbos?
Yes. Share your turbo and fueling setup so we can build a safe scaling strategy.
How do revisions work?
You submit guided logs and we revise the file to dial in boost, fueling, and response.
Can you tune remotely worldwide?
Yes — remote is our primary workflow. In-person and mobile diagnostics and tuning-related support are available in the Pittsburgh, PA area.

Tune paths and related pages.

Built around your N55.

Your chassis and year confirm the platform. Your hardware and fuel set the calibration. Your logs set every revision.

Find Your TuneMessage us