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![mTune SMARTflash m390 Turbocharger Upgrade [Mk4/Mk4.5 Focus ST]](http://www.mountunestore.com/cdn/shop/files/mtune_smartflash_m390_2048x.png?v=1723137513)
2743-365>390-AA
The mountune m390 power upgrade for the Mk4/MK4.5 Focus ST takes performance and fun to new, elevated levels and is perfect for those wanting to reliably extract peak performance from their 2.3-litre EcoBoost engine, whilst maintaining drivability and practicality.
The m390 is based around a new hybrid turbocharger which starts life as a new genuine Ford turbo, before having numerous flow- and performance-enhancing upgrades carried out to it, such as a bespoke compressor wheel and 360º thrust bearing.
The end result is response and low-end performance that feels like the OE turbo, combined with mid-range and top-end power and torque that feels anything but like the standard turbo.
The additional wave of torque is delivered across a wide spread in the rev-range which translates into effortless drivability and totally transforms the overall driving experience... and fun-factor.
As this is a hybrid unit based on the OE Ford turbo, installation is a direct swap, like-for-like, which keeps costs and fitting fuss-free. On a similar basis installation of the supporting m390 calibration is applied using our SMARTflash app, OBD Bluetooth adaptor and your smartphone, so it couldn't be simpler - no lengthy dealer visits, no laptop, no wires, no handsets, no hassle!
The latest version of SMARTflash also provides additional functionality, such as fully configurable gauge displays using the OBD data-stream, comprehensive data-logging and a built-in performance meter, too.
m390 SMARTflash is also supplied with two specific performance calibrations, a hybrid economy calibration - which has a reduced power output but allows you to safely use 95RON, plus two companion calibrations (standard and anti-theft) which include the following features:
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Increased power and torque (up to 390PS / 600Nm) |
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More aggressive launch control strategy |
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Enhanced audible exhaust output in Sport / Track modes |
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Optimised no-lift shift functionality |
For assistance setting up and installing SMARTflash, please refer to the user guide, here.
Important: In order to achieve and maintain performance and reliability, the m390 upgrade should be used in conjunction with the hardware listed below and should only be used with 97RON+ fuel. If a lower octane rating of fuel is the only grade available we recommend switching to the supplied Hybrid Economy calibration which can be used on normal unleaded fuel reliably in all scenarios.
Recommended m390 hardware:
Please note: The phone device and OBD adaptor is shown for illustration of SMARTflash app only, and is not included with this product. This upgrade is for existing vehicles already running m330 or m365 SMARTflash and have the required hardware installed.
As of August 2024, this upgrade is for MANUAL models only. AUTOMATIC support will be added soon.
Substantial gains in power and torque from 2500rpm even against our m365 make the m390 even more drivable, even faster and even more fun to enjoy - at any rpm.
Please note: 97RON+ fuel should be used with m390. If this is not available, the Hybrid Economy calibration should be utilised to maintain reliability.
Individual vehicle output may vary based on vehicle condition, external parameters and method of testing.
To help achieve the power and torque figures indicated and to ensure maximum reliability, the m390 upgrade should only be used with a suitable 3" high-flow downpipe with sports catalyst and our Sport GPF (to ensure a substantial exhaust back-pressure reduction can be achieved). Additionally, a high-performance induction kit should also be utilised, such as our carbon fibre variant.
Although not essential, in warmer climates or when used regularly on track, an upgraded intercooler is also highly recommended.
Already running our m330 or m365, or perhaps your car's standard and you're not sure which option is right for you?
Follow our look-up chart to see what your next calibration step is and which hardware you need to consider with it.
This upgrade is for vehicles that are already running, or that have available the hardware required to support our m365 upgrade and that have already upgraded to either m330, or m365 using our SMARTflash OBD Bluetooth adaptor.
As of August 2024, this upgrade is for MANUAL models only. AUTOMATIC support will be added soon.
Please note: installing the m390 calibration without the correct hardware may result in failure to achieve the quoted power / torque figures, abnormal running, detrimental fuel consumption or engine warning light illumination or, in extreme circumstances, damage to and / or failure of the engine. In any such instance no warranty is offered or implied by mountune.
By purchasing this product you agree for mountune to send you email about new updates or technical features relating to SMARTflash. you can opt out at any time.
United KingdomGoing from m330 to m365 with all the hardware I just had to go for the m390 and there is a difference in torque and boost and I could feel it especially mid range and top end . It was a good 7 hours to install . Very happy with the results and the guys at mountune do look after their customers. From start to finish. Can the front wheels handle to extra torque ? Absolutely
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