McLaren 720S / SENNA Calibration Notes

 

 

M-Tuner Calibration Suite

What's Included?

  • M-Tuner Dongle for OBD Flashing

  • USB Cable

  • M-Engineering maps built for your M840T (see calibration notes below)

  • On-the-fly Live Map Switching

  • M-Engineering Support


Stage Hardware Requirements

  • Stage1

    • Designed for a vehicle with the following modifications:

      • Downpipes: Stock

      • Exhaust: Stock or aftermarket

      • Air Filter: Stock or aftermarket drop-in filters

      • Intercoolers: Stock or aftermarket

      • Fuel System: Stock

      • Turbos: Stock

  • Stage2

    • Designed for a vehicle with the following modifications:

      • Downpipes: Aftermarket downpipes, 3” or larger, are required.

      • Exhaust: Stock or aftermarket

      • Air Filter: Stock or aftermarket drop-in filters

      • Intercoolers: Stock or aftermarket

      • Fuel System: Stock

      • Turbos: Stock

  • Stage2+

    • Designed for a vehicle with the following modifications:

      • Downpipes: Aftermarket downpipes, 3” or larger, are required.

      • Exhaust: Stock or aftermarket

      • Air Filter: Stock or aftermarket drop-in filters

      • Intercoolers: Stock or aftermarket

      • Fuel System: Injector Dynamics ID1050X injectors

      • Turbos: Stock

  • Stage3

    • Designed for a vehicle with the following modifications:

      • Downpipes: Aftermarket downpipes, 3” or larger, are required.

      • Exhaust: Stock or aftermarket

      • Air Filter: Stock or aftermarket drop-in filters

      • Intercoolers: Stock or aftermarket

      • Fuel System: Injector Dynamics ID1050X injectors

      • Turbos: Pure Turbo PT1200


Minimum Octane Requirements

  • 91 Octane - For use with 91 octane (R+M)/2 or 95RON fuels minimum. 94 octane fuels with 0% Ethanol should also run the 91 octane file.

  • 93 Octane - For use with 93 octane (R+M)/2 or 98RON fuels minimum.

  • 100 Octane - For use with 100 octane (R+M)/2 or 105 RON fuels minimum.

  • E85 - For use with a 85% ethanol fuel. 70% Ethanol minimum is required!

*Warning*

Using a lower octane than is designated by the calibration can promote increased engine wear and in severe cases catastrophic engine damage. Never run a map designed for high octane with low octane in the fuel tank. E.g. Do not run the 100 Octane map with 93 octane fuel in the tank.

 

If your parts configuration or octane fall outside of the bounds of these maps we do offer ProTuning services past what is offered here in the maps. From upgraded turbos and fuel systems to nitrous, we can help!


Torque and Horsepower Output

These dyno charts represent typical power output to the wheels as tested on a DynoJet 424 Linx dynomometer. These are not erroneous numbers extrapolated to an engine horsepower.

  • “Max Gain” represents the largest delta between any two points on the graph at the same RPM.

  • “Peak Gain” represents the overall delta of the highest reading per dyno plot.

  • We break up power gains into % and numerical gains. We know that every dyno reads a bit different, particularly between manufacturers, so we have utilized the percentage gains which should be similar and independent of the dyno. The numerical delta gains are a more user friendly value but may not read similar on every dyno.

Stage1

  • 91 Octane (R+M)/2 or 95 RON (Map Slot 1)

  • 93 Octane (R+M)/2 or 98 RON (Map Slot 2)

 

  • 100 Octane (R+M)/2 or 105 RON (Map Slot 3)

Stage2

  • 91 Octane (R+M)/2 or 95 RON (Map Slot 1)

  • 93 Octane (R+M)/2 or 98 RON (Map Slot 2)

  • 100 Octane (R+M)/2 or 105 RON (Map Slot 3)

Stage2+

  • E85 - 85% ethanol

Stage3

  • 100 Octane (R+M)/2 or 105 RON

 


Custom Features

  • Please specify if there is a certain feature you do not want incorporated into your calibration when ordering your M-Tuner Suite. If nothing is specified all will be enabled by default.

Feature

Description

M-Tuner Feature

Feature

Description

M-Tuner Feature

Live Map Switching

This feature allows multiple calibrations to be stored on the ECU at one time.  Utilizing the cruise control stalk, you can quickly and easily switch between maps while the car is running.  More Info on how Live Map Switching works and directions are located here

Yes

Rolling Anti-Lag

Rolling Anti-Lag is a popular roll racing feature that allows the end user to take off from a roll at full boost rather than waiting for the turbos to spool up. A more in depth description and directions can be found here.

Yes

Custom Boost Control

Custom Boost Control allows for 100% control over the boost system. With a complex control strategy compiled with complete PID control, atmospheric compensations, and various safeties to properly hit your boost target every time. This is also highly useful for upgraded turbos because it allows us full control over the electronic wastegates

Yes

Boost by Gear

Boost by gear allows for varying boost targets per gear. This can be very useful in lower gears where the torque can easily overpower grip. Boost by gear can target specific torque and boost levels per gear to keep the tires planted.

Yes

Staged Injection

Allows for control of two complete separate sets of injectors that seamlessly activate when needed. Combine with our Injector Characterization Logic you can run 16 large injectors and still retain stock like idle and drivability

Yes

Custom Injector Characterization

This allows for micro adjustments in the non linear range of the fuel injector as well as differential pressure based latency adjustments. When combined with quality injectors, we recommend ID1050X, you can vastly increase your fuel delivery capability while retaining stock like idle

Yes

Custom Engine Safeties

While the factory ECU has plenty of built in redundancies we have opted to add in our own via injecting our own custom code. When a threshold is tripped the throttle is gently closed temporarily to prevent engine damage.

Yes

M-Logger

A feature in the M-Tuner Suite that allows end users to data log up to 75 parameters at speeds of up to 120Hz.  The parameters logged are vital to proper engine health and function.  Different parameters can be logged depending on situations based on logging profiles.  This is particularly useful when diagnosing a mechanical issue with the car or revising a calibration to optimize it for your parts configuration if it lies outside of our standard off the shelf type recommendations. 

Yes

Read / Clear Faults

A feature in the M-Tuner Suite that allows end users to clear faults in all modules such as the ECU, PCCU, ESC, SRS. This also allows users to read all engine related DTC codes with McLaren specific descriptions

Yes

Dyno Mode Enable/Disable

Allows the end user to put their McLaren in dyno mode for independent power verification or custom dyno tuning.  All McLaren models require dyno mode to operate properly on a roller chassis dyno.

Yes

Auto Start/Stop Disable

This feature disables the engine from turning off when coming to a stop in normal mode.  The engine shutting off in a high-performance car is usually more startling than it is helpful.

Optional

Left Foot Braking

This is a nice feature to have for track enthusiasts who like to use both feet while racing.  This extends the time you can press the brake pedal before all throttle input is cut off allowing racers to exit corners with more aggression.  This does not disable the OEM safety control and will still perform as desired in an emergency situation.

Optional

Kickdown Disable

The kickdown allows for the transmission to automatically downshift if it deems it is necessary in manual mode.  Many folks who track their car have their shift points well planned out in advance for every corner and unpredictable shifting can be unsettling.  This feature disables the kickdown, however special care needs to be taken not to lug the car in manual modes.

Optional

Loud Start

When enabled, and the vehicle is up to operating temperature, the user can start the car with a much more aggressive rev.  Simply turn on the active panel and set both modes to track before starting the car. Loud start is only active if the conditions are met. Otherwise it will start normally.

Optional

 

Motorsport Features (additional cost applicable)

  • Motorsport features are custom written by M-Engineering for the McLaren and cater more towards the track or dragstrip enthusiast. Motorsport features can be found here.

Feature

Description

Feature

Description

Rolling Anti-Lag

Roll Racing at the track has gained popularity over the years. Rolling Anti-Lag works by inhibiting acceleration while simultaneously building boost to allow for a “rolling launch.”  This is all done via the cruise control stalk and accelerator pedal. Simply get to the roll speed you wish to accelerate from, engage the cruise control stalk, floor the accelerator, let boost build for 1-2 seconds, release the cruise control, and HANG ON! You will now accelerate with full boost.  Rolling boost is a psi-based target system and boost during Rolling Anti-Lag can be calibrated independently of target boost. Built in safeties prevent overboost and a built in cool down timer prevents possible thermal fatigue issues due to repeated rolling anti-lag attempts.

Custom Closed Loop Boost Control

With custom boost control, we can target specific boost pressures based on various conditions, such as torque or gearing.

Injector Characterization

If you have aftermarket injectors, we are able to set them up to run safely and properly on your car to hit correct AFR targets.

Staged Injection

With staged injection, we can control when and how the secondary set of injectors on your M840T turn on. This is particularly useful on more exotic fuels like race gas or ethanol.

Fan Override

With fan override, custom code is written to turn the fans on at certain points or on certain map slots. This is great for a “cool down” lap or when trying to bring temps down on the road.

Contact Info

If you have any further questions please feel free to contact us via email.

  • Info@M-Engineering.us