BMW N55 Calibrations

tuning guide for bmw n55 platform

The brilliantly engineered BMW N55 engine coming as a straight 6 cylinder 3.0 turbo. Having been used since the E series this engine has been vastly improved for use in the F series coming in the full BMW range badged as the 35i. This engine has great potential for huge power setup rivaling with the B58, whilst retaining the drivability for RWD which the B58 lacks in our opinion. This model comes in 2 variants the the earlier models before June 2013 PWG (Pneumatic wastegate) & the July 2013 onwards EWG (Electronic wastegate). The potential of both these setups are completely different and outlined below.

PWG (Pneumatic Wastegate)

Stage 1 calibration:

350-360BHP & 520-540NM

 

Mandatory:

  • Completely stock vehicle (Zero modifications required)

 

Optional Additions:

  • Induction kit
  • Catback exhaust
  • Gearbox map (Auto models only)

Stage 2 calibration:

360-380BHP & 550-600NM

 

Mandatory:

  • Downpipe decat or sports cat exhaust (T&C's Section 3)
  • Induction kit
  • Uprated intercooler
  • Uprated charge pipes
  • Gearbox Map (Auto models only)

EWG (Electronic Wastegate)

Stage 1 calibration:

380BHP & 550NM

 

Mandatory:

  • Completely stock vehicle (Zero modifications required)

 

  • Optional Additions:
  • Induction kit
  • Catback exhaust
  • Gearbox map (Auto models only)

Stage 2 calibration:

400-420BHP & 600-620NM

 

Mandatory:

  • Downpipe decat or sports cat exhaust (T&C's Section 3)
  • Induction kit
  • Uprated intercooler
  • Uprated charge pipes
  • Gearbox Map (Auto models only)

Please note figures will vary from vehicle to vehicle the above quotes are from what we achieved on many occasions but as we all know every engine is different.

pwg example


Here we show a great example of both the stages taking place on a very healthy example of the N55 engine in form of the F20 135i with PWG turbo. This was an excellent example of a N55 engined 135i brought to us from stock and covering over various hardware and tuning stages. The graph defines what we have achieved within stages 1 & 2.


Stock:

303BHP & 336Ftlb (455NM)


Stage 1 Calibration:

353BHP & 420Ftlb (569NM)


Stage 2 Calibration:

369BHP & 442Ftlb (599NM)

Ewg example


Here we show a great example of both the stages taking place on a very healthy example of the N55 engine in form of the F20 135i with EWG turbo. This was an excellent example of a N55 engined 135i brought to us from stock and covering over various hardware and tuning stages. The graph defines what we have achieved within stages 1 & 2.


Stock:

322BHP & 324Ftlb (439NM)


Stage 1 Calibration:

389BHP & 415Ftlb (562NM)


Stage 2 Calibration:

423BHP & 446Ftlb (604NM)

Please note we require these vehicles to have appropriate tyres for the vehicle in order to conduct our dyno testing. These vehicles are light on the rear end and have an aggressive power delivery without premium branded high speed rating tyres we are unable to dyno these vehicles. In term this means no budget tyres, no winter tyres, no bald tyres, no tyres with cuts or bulges.

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