SKU: 37742169211

M-Engineering calibration suite ECU tune for McLaren 4.0L M840T

Sale price$2317.02 Regular price$2574.47
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

M-Engineering calibration suite ECU tune for McLaren 4.0L M840TOur record setting calibrations for the 720s! M Engineering ECU calibrations are on the fastest 720s in the world! Our painstaking R&D and large level efforts made with the M840T engine have made tuning the SENNA a safe and enjoyable experience as well! This is our base calibration which does not include any features or the M Tuner. Please specify what octane fuel you will be using and your level of modifications when ordering. McLaren 720S

Our record setting calibrations for the 720s! M Engineering ECU calibrations are on the fastest 720s in the world! Our painstaking R&D and large level efforts made with the M840T engine have made tuning the SENNA a safe and enjoyable experience as well! This is our base calibration which does not include any features or the M-Tuner.

Please specify what octane fuel you will be using and your level of modifications when ordering.

The M-Tuner Calibration Suite for 720S, 765LT & Senna, which includes all of our custom features, can be found here.

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. 


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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 37742169211

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Carrie
Birmingham, US
★★★★★ 4
Accurate pics and descrip
Size: 26" x 20" (Pack of 2), Color: Cow Print Brown
Soft on one side, fluffy on the other, cute.
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Reviewed in the United States on March 20, 2026
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Jodi
Fort Morgan, US
★★★★★ 5
Soft and fluffy
I got these for my mom, who is in a nursing home. It's use is for soft padding under her sore leg. It was recommended by someone and it works. Amazingly, super soft and fluffy
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Reviewed in the United States on March 11, 2026
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Debra Mittelstadt
Waukegan, US
★★★★★ 5
Perfect choice
Size: 36" x 20" (Pack of 2), Color: Cow Print Brown
very nice, everything about them is quality
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Reviewed in the United States on March 17, 2026
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Cassie
Omaha, US
★★★★★ 3
quality gets worse over time
have had these for a while now, they were better quality when i first purchased them. i flip them inside out before washing and they just end up scraggly and weird textured after i wash them. i’m not sure if i’m doing anything wrong when i clean them. not a terrible price for what you get, i just wish they were slightly better quality
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Reviewed in the United States on March 4, 2026
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aposhsavage
Charlottesville, US
★★★★★ 5
Fab , chic, furry & perfect for HTX weather
Five stars because I’m super picky about my main blanket and after two years I finally found one that will be as good as the one with 70 holes that I’ve been holding onto like a 7 year old. It’s super furry, and soft and the solid black side is smooth. Its not too heavy , its the best kind of thin which is perfect for Houston Texas. It’s just how I like my go to blanket. I have tons of blankets but there’s always one that’s my most favorited and now, this one will be for the next however many years. It’s a FAB design too. Love!
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Reviewed in the United States on May 7, 2026

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