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mTune SMARTflash m330 Upgrade [Mk4 Focus ST]

The mountune m330 power upgrade for the manual Mk4 Focus ST releases the maximum achievable power and torque from the potent 2.3-litre EcoBoost engine without significant hardware changes, substantially yet safely raising power and torque output; improving outright performance, drivability and fun, whilst also adding a host of functionality, unique to mountune.

As with all mountune upgrades, it's had to pass our own stringent durability testing criteria, which included tens of thousands of miles and many months accumulating extensive data such as in-cylinder pressure and other key metrics all based on different driving scenarios from road to track and when used on different fuel octane ratings to ensure engine robustness, whilst retaining all safety parameters, so you can have complete peace of mind that you're not just buying the best upgrade for your Focus ST, but also the most robust aftermarket calibration, too.

Peak power is increased to 330PS, whilst torque is uplifted to 515Nm but, as can be seen from the power graphs, it's the substantial increase throughout the rev-range and the way the torque is delivered that completely transforms the driving experience.

Working together with industry leading software and hardware teams has enabled the very latest technology available to be incorporated, taking mTune - and making it a whole lot smarter!

The mTune SMARTflash app allows you to easily DIY install and update calibrations to your ECU using nothing more than our app, the supplied Bluetooth OBD interface and your Smartphone; no laptop, no wires, no handsets, no problem!

m330 SMARTflash includes three calibrations, with unique functionality:

  • m330 performance 
Increased power and torque (330ps / 515nm)
More aggressive launch control strategy
Enhanced audible exhaust output in Sport / Track modes
Custom Track Mode (recalibrated wet-mode for track settings minus pops and bangs)
  • Stock performance
  • Anti-theft

In addition, the SMARTflash app, which is available for Apple and Android users, also allows for easy future calibration updates and includes a fault code reader, plus a handy VIN and calibration ID reader as standard.

The m330 calibration has been fully optimised to utilise the mountune high-flow panel filter, which allows the engine and turbocharger to work more efficiently, as well as improving induction noise.

m330 supports all known regional variations (excluding automatic transmission - support coming soon) and as it can be installed and removed anywhere in the world, at any time yourself, you could say the power's in your hands, quite literally!

Please note: the m330 in currently unavailable for Asia-Pacific specification cars, due to different emission standards. Please send us your VIN to check compatibility,

The m330 is not transferable from car to car.

What's in the box?

✓ smartflash obd bluetooth interface
✓ smartflash app (free download)
✓ mountune zip-up case, info card and user guide

iphone shown for illustration, not included.

Truly uplifted

m330 delivers a phenomenal uplift in both power and toque across the rev-range and transforms your st into something all-together more engaging and more fun than you could've possibly imagined.

peak figures are achieved using 99ron fuel but m330 is perfectly safe to use on 95ron+ as it retains full factory knock-control. 

please note: all hardware is supplied as standard with a 12-month, 12,000-mile warranty against manufacturing defects.
installing the m330 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 emails about new updates or technical features relating to smartflash. you can opt out at any time.

Customer Reviews
4.9 Based on 93 Reviews
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Filter Reviews:
    Ben H.
    United Kingdom United Kingdom
    Transforms the car

    I owned a facelift mustang gt and just purchased a mk4 st so wanted that extra punch so it didn't feel like such a downgrade in performance..... I had the ST stock for one day before i installed the m330 kit and mountune panel filter. All I have to say is wow! I swear this feels faster than the mustang! The torque is absolutely insane for the size of car it is. Any gear, any rev range and it's instant. Proper throws you back into your seat. Can't recommend this enough. The car is an absolute weapon on b roads. The installation process was very easy and the kit came with a handy little step by step book so you can't go wrong. Overall, very impressed and look forward to upgrading to the m365 package. The only thing which was not what i was expected is the pops and bangs. They seem to be just as random and sometimes non existent as with a stock st. But when they do happen it's brilliant. Sounds like a proper rally car. This isn't a bad point BTW, i was just expecting more.

    Germany Germany
    Nice Job

    Well done Mountune! Nice upgrade! Thx

    Graham G.
    United Kingdom United Kingdom
    Makes a good car even better.

    Bought at the Ford Fair with a bargain £99 off the price. Makes the Focus even better than it was.