BMW M2 Competiton
WG Motorworks Tuning Guide
The M2 Competition uses a completely new power plant in the M Performance fettled 2 Series chassis, the car is equipped with the S55 engine, which is also found in the F series M3 / M4. Essentially running in the same configuration aside from some emissions-related exhaust restricting filters, known as GPF / PPF (Gasoline / Petrol Particulate Filter). Punching 410HP from a 3.0 Twin-turbo straight-six direct injection engine. In Standard form the M2c is no slouch….. however, most owners will notice the power goes flat over 5500rpm (as shown in the power graph in green). This power curve is resolved with a simple software upgrade, where outputs of 500HP can be achieved.
Overall the S55 engine is a strong power unit, matched with a DCT gearbox that is proven to handle in excess of 600-700HP in standard form, if using for the track we would recommend some additional cooling packages to ensure temperatures are kept in check.
The main weak link on the S55 has been found, this is related to the crankshaft to timing gear attachment - more specifically the use of a flange that relies purely on bolt torque pressure to attach the timing chain bottom pulley to the crankshaft without a keyway or dowel. This can 'slip' with aggressive downshifts / high torque numbers. We can offer a capture plate that helps to prevent this from occurring, however there is no guarantee that is a permanent fix. For those running big power and looking for a more assured ‘fix’ there is a complete solution that involves replacing the bottom pulley with a doweled crank hub. More information can be found here
For some owners the crank hub full fix is not a cost-effective solution, not to worry we have you covered! We can offer 'Crank hub friendly tunes' where we heavily limit the torque output, even down to stock if required, but build the power up in the upper RPM, to create a perfectly flat torque curve while increasing HP dramatically past 4500rpm
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 and full track system (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 high performance pads / brake lines to full suspension coilover systems, with various Roll bar and bush upgrades. Click here for Chassis Upgrades
ECUTEK RaceRom
With our BMW tuning services, we are able to offer to tune over ECUTEK's Racerom platform - allowing us to offer some great features such as different MAP modes, creating different driving power outputs, octane, flex fuel, and Methanol maps, all of which can be switched while driving along. Along with this, we can offer on-the-fly burble adjustments, recalibrated sports dials to be used as charge temp/boost gauges, push-to-pass, and rolling anti-lag features to name a few! Click on the image to find out more!
xHP Gearbox Software
Also with our BMW tuning services, we are able to offer the world-renowned xHP DCT Gearbox software, this software dramatically changes the whole driving experience providing instant paddle response, rapid shift speeds, and revised shift points while adding aggressive throttle blips on downshifts under braking in automatic mode. The biggest benefit comes to tuning, with the increased clutch pressures we are now able to run more torque without slip issues or having to upgrade expensive clutch packs. Click on the image to find out more!
Stage 1
The first step in extracting power from the S55 engine requires no hardware changes, this is a software-only upgrade. The main objective was to keep the power climbing nearer to the rev limiter rather than flattening off like standard, along with increasing the torque levels while following a similar power delivery to stock to avoid unnecessary torque spikes from the small twin turbo's. While retaining a safe AFR to ensure EGT / Catalyst temperatures are kept in check.
With our 'Stage 1' software upgrades the following features are included:
- Vmax Removal (Speed limiter removed)
- Sports Displays recalibrated to suit new outputs
Expected Results, based on our Dyno Dynamics rolling Road:
500-520HP 490-530LBFT
Stage 1+
The next step in extracting power on the M2c engine requires the removal of the OPF filters. With the option of either a simple bypass section or a complete cat back system. Once the restrictive filters are removed not only will the exhaust note be much improved but additional overrun can now be heard. GPF 'delete' software has to be installed to ensure no limp mode operation, and that all EML (Engine management lights) are eliminated for any GPF faults. With the hardware improvement, we see gains closer to what the M3/ M4 would expect with stage 1 software.
With our 'Stage 1+' software upgrades, the following features are included:
- Vmax Removal (Speed limiter removed)
- Sports Displays recalibrated to suit new outputs
- GPF delete software
- Enhanced overrun (Optional)
- Cold start delete (removal of high / loud idle) (Optional)
Expected Results, based on our Dyno Dynamics rolling Road:
520-540HP 520-550LBFT
WGM Stage 1+ Tuning Package
Stage 2
The final step in maximizing the efficiency of the stock turbochargers is removing the catalyst in the downpipes, Total removal of the catalyst is recommended for Track use only as it is not MOT compliant. With the catless downpipes installed Fueling can be optimized and new lambda targets set, along with a slight increase in boost and ignition timing taking into account the less restrictive exhaust system.
Standard cat back with or without GPF filters can be still retained, how ever optimal results are based on free flowing turbo back system. An uprated Charge cooler system is not a requirement, however gains can still be achieved by installing one.
With our 'Stage 2' software upgrades the following are included:
- Vmax Removal (Speed limiter removed)
- Sports Displays recalibrated to suit new outputs
- Catalyst code removal to avoid EML lights
- Cold start delete (removal of high / loud idle) (optional)
- GPF delete software (If applicable)
- Enhanced over run (Optional)
Expected Results, based on our Dyno Dynamics rolling Road:
530-560HP with 540-560LBFT
WGM Stage 2 Tuning Package
Stage 3
The stock turbochargers are the limiting factor when it comes to the next stage of performance, with compressors/turbines limiting any more flow. With larger compressors and turbines installed into the stock turbo housings, these 'Hybrids' allow much greater mass airflow and exhaust gas flow. High-flow downpipes are a must at this state of tune, and a cat-back system is advised for optimal gains.
Charge temperatures start to creep up when increasing the boost pressures - so depending on target HP and usage we would advise a charge cooler system upgrade as well.
Water Methanol would also be a recommended upgrade when looking for maximum output.
With our 'Stage 3' software upgrades the following are included:
- Vmax Removal (Speed limiter removed)
- Sports Displays recalibrated to suit new outputs
- Catalyst code removal to avoid EML lights
- Cold start delete (removal of high / loud idle) (optional)
- GPF delete software (If applicable)
- Enhanced over run (Optional)
Expected Results, based on our Dyno Dynamics rolling Road:
600-750HP with 600-700LBFT
WGM Stage 3 Tuning Package
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