M Engineering Tuning

Fitment: Mclaren Senna

For Our Local Las Vegas Clients, We Are Proud To Offer Tuning Solutions For Your Exotic

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

Stage 1

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

Stage 2

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

Stage 2+

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

Stage 3

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.

M-Engineering always recommends new factory spark plugs gapped down to .022 when tuning your car. On higher horsepower applications or ethanol files it can become possible to blow out spark if running older plugs or incorrect gapping.

NOTES ABOUT TIRES: Factory tires and factory tire pressures normally result in high levels of traction control intervention, especially after tuning where more torque and power are commanded. As a result, this intervention can pull back throttle and power to keep the car steady and the car won’t be at it’s fullest potential. We always recommend running tires such as Toyo R888r’s, Cup2’s or any other sticky compound in conjunction with lower tire pressures.
All season tires, factory Pirelli’s, or PS4S will hold you back!

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.

Stage 1

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)

Stage 2

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)

Stage 2+
E85 - 85% ethanol

Stage 3
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
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
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
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

Disclaimer: You accept responsibility and risks of any tunes and added features by M-Engineering. If you are not the end user of the car, you will be solely responsible for notifying the purchaser and/or customer they also accept the responsibility and risks of these and M-Engineering is not liable. M-Engineering is also not liable for voided warranties due to installation of our products.

Return Policy: All sales are final and non-refundable. M-Engineering provides specific software calibrations for individual vehicle use and is not liable for misuse or vehicle behavior due to installation error or mechanical issues. M-Engineering will work one-on-one with individuals to assist with remote diagnosis to vehicles to our best ability and advise next-action steps as needed. End-users are responsible for vehicle maintenance, integrity of aftermarket parts installation, and having their vehicles up-to-date with their manufacturer's latest updates and TSB's.

McLaren Tuning