BMW M2

Tuning guide

BMW's first 2 Series M car, (the M2). Leaving the factory with 365HP and a quoted 500NM torque using a temporary overboost feature, which feels right at home within the M division fetled 2 Series chassis. Both 6 speed manual and 7 speed DCT gearboxes were offered.

The M2's engine is a 3.0 litre straight 6 power plant, equipped with Valvetronic (Variable cam lift), a single turbocharger (Twin Scroll) with direct injection fuel system, known as the N55 engine which was upgraded with a revised oil system and different turbo from the normal BMW N55 range. With the official engine code of N55B30T0 which is a predecessor of the N54 twin turbo 3.0 engine.

One common issue with increasing the boost pressure while tuning is the plastic cold side charge pipe can often fail, leading to a total loss of boost pressure, so for reliability it is recommended that this pipe be replaced with one constructed from aluminium instead.

N55 Engine ECU tuning is offered with two options. Our standard CustomPro tune with its proven calibrations, or we can offer BM3 (Bootmod3) software for the end user who would like to fine tune some settings themselves. Map switching on driving modes is offered. Click here for software info

For the power hungry folk, or those who simply want to improve their soundtrack - plenty of upgrades can be offered from MOT legal exhaust systems or full track ready systems (Not road legal), along with Hybrid turbo chargers and engine cooling upgrades. Click here for Performance Upgrades

For those Track Addicts, Nurburgring goers or simply for those who have increased their power and want a chassis to match, we can offer simple upgrades from lowering springs, performance pads to full coilover systems. anti roll bars and limited slip differential upgrades. Click here for Chassis Upgrades

Stage 1

The first step with extracting power from the N55 engine requires no hardware changes, this is a software only upgrade. The ECU software follows the linear torque delivery like stock through the low to mid range while adding a nice 40-45 lbf across the curve (maximising flow).

With our 'Stage 1' software upgrades the following features are included:

  • Vmax Removal (Speed limiter removed)
  • Sports Displays recalibrated to suit new outputs
  • Enhanced over run on Sports mode (Optional)
  • Switchable map modes (normal power on Comfort, with the 'MAP' on Sport modes)

Expected Results, based on our Dyno Dynamics rolling Road:

+25-35HP (390-400HP)
+35-55LBFT (435-455LBFT)

 

 

WGM Stage 1 Tuning Package

Stage 1+

An additional mod which improves the Flow of the stock turbocharger is to remove the catalyst from the downpipe, either replacing with a high flow sports catalyst for road use, retaining the cars MOT legality, or the use of a replacement pipe with no catalyst for cars only used on the track. With the free flowing downpipe installed, fuelling can be optimized and new lambda targets set, we can add a slight increase in boost pressure and ignition timing to take advantage of this setup.
Standard cat back can be retained, however optimal results are based on free flowing turbo back system.
Low end response is improved and turbo lag is reduced, torque levels increased across the complete rev range, gaining 20-25LBFT from 2000rpm - 5000rpm, with peak gains of 7-12HP over the Stage 1 upgrade.

With our 'Stage 1+' software upgrades the following features are included:

  • Vmax Removal (Speed limiter removed)
  • Sports Displays recalibrated to suit new outputs
  • Enhanced over run on Sports mode (optional)
  • Switchable map modes (normal power on Comfort, with the 'MAP' on Sport modes)
  • Cold start delete (removal of high / loud idle) (optional)
  • Catalyst code removal to avoid EML lights

Expected Results, based on our Dyno Dynamics rolling Road:

+35-45HP (400-410HP)
+50-70LBFT (445-465LBFT)

WGM Stage 1+ Tuning Package

Stage 2

The intercooler is the limiting factor when it comes to tuning the N55 Engine, with Intakes easily hitting 50-60+ degrees celsius on a single power run. To maximise the performance of the stock turbocharger we install an air to air intercooler with a much larger core and overall surface area, dramatically improving intake temperatures - instantly picking up horsepower and most importantly consistency, especially in the summer months where the standard intercooler will struggle, causing power to flatten off at higher RPM
With the intake cooling system improved ignition timing can be advanced gaining even more power.
With our 'Stage 2' software upgrades the following are included:

  • Vmax Removal (Speed limiter removed)
  • Sports Displays recalibrated to suit new outputs
  • Enhanced over run on Sports mode (optional)
  • Switchable map modes (normal power on Comfort, with the 'MAP' on Sport modes)
  • Cold start delete (removal of high / loud idle) (optional)
  • Catalyst code removal to avoid EML lights

Expected Results, based on our Dyno Dynamics rolling Road:

+50-70HP (415-435HP)
+55-75LBFT (450-470LBFT)

WGM Stage 2 Tuning Package

Stage 3

The stock turbocharger is the limiting factor when it comes to the next stage of performance, with compressor / turbines limiting any more flow, we can resolve this by installing a new turbocharger with larger compressor and turbine wheels into the stock turbo housing, this 'Hybrid' will allow much greater air and exhaust gas flow.

With the improved intercooler and exhaust systems already installed, the fuel system will require upgrading to allow adequate fuelling to match the increased air flow mass that the turbocharger can produce. Exact results will depend on turbocharger chosen, and fuelling systems used.

Water methanol injection would also be a worthwhile upgrade when pushing for maximum power output.

With our 'Stage 3' software upgrades the following are included:

  • Vmax Removal (Speed limiter removed)
  • Sports Displays recalibrated to suit new outputs
  • Enhanced over run on Sports mode (optional)
  • Switchable map modes (normal power on Comfort, with the 'MAP' on Sport modes)
  • Cold start delete (removal of high / loud idle) (optional)
  • Catalyst code removal to avoid EML lights

Expected Results, based on our Dyno Dynamics rolling Road:

+100-235HP (465-600HP)

+55-155LBFT (450-550LBFT)

OUR SERVICES INCLUDE

Dyno Testing

All ECU remaps are carried out on our State of the Art Dyno Dynamics Dynotech rolling road, which can accurately read upto 1200HP

Data Logging

Each car is hooked up to a Wide band lambda sensor to ensure correct air to fuel ratio, along with data logging tools to ensure Boost, Ignition timing parameters are all in check

Diagnostic Check

We carry out a pre and post tuning ECU diagnostic trouble code check (DTC) to ensure no faults are present before or after tuning