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m310 Power Upgrade Kit [Mk7 Fiesta ST]

Calibration: m285 > m310 (Inc. Carbon Induction and IN-FIELD UPDATE)

Taking the extensive work to develop our m285 MRX turbo upgrade and adding our high-flow, heat resistant carbon fibre induction kit, together with a fully optimised m310 calibration has totally transformed the former flagship power upgrade for Fiesta ST enthusiasts.

Whilst the lower area of the rev-range remains largely identical to the m285
upgrade, from 4000rpm upwards, there are substantial gains in both torque and
power, with a peak delta of 40Nm and 25PS being achieved.

Unlike other upgrades that deliver just peak or high RPM power, the mountune MRX turbocharger offers performance throughout the entire power band ensuring a very responsive and drivable car. With the addition of our carbon induction kit and revised calibration the mid- to top-end is also further optimised.

The MRX Turbocharger at the heart of the m310 upgrade is engineered around a genuine Garrett GT2554R core that features a custom engineered 11-blade billet compressor wheel and matching 3" inlet anti-surge compressor housing for incredible response and power. Developed as a complete system with everything available from one source ensures the performance and quality you’ve come to expect from mountune.

Turbocharger Features

  • Dual-row Ball Bearings - lowest friction and fastest spool/response
  • Water Cooled Center Section
  • Double seals on both turbine and compressor end for extreme durability and resistance to any oil seepage
  • Cast Stainless Steel exhaust adapter
Kit Features
  • mountune Stainless Steel V-Band Conversion
  • Pre-formed coolant lines ensure trouble free installation and performance
  • Pre-installed mountune Billet Wastegate Actuator
  • Turn-Key solution. 

Calibrations can also now be installed via a bespoke phone flashing solution,
enabling the ultimate mountune Mk7 ST performance upgrade to be enjoyed worldwide for the first time.

Already have an OBD Reader with your m285? Then select the IN-FIELD UPDATE option. If not please select the with OBD Reader option.

Required hardware

  • mountune Carbon induction kit
  • Upgraded intercooler - mountune large capacity recommended 
  • mountune complete intake or suitable option (induction kit and rear intake pipework)
  • mountune high-flow downpipe and cat-back exhaust, or similar.


Even versus our m285 upgrade, our m310 provides a very noticeable uplift in power and torque from around 3500-4000rpm right through to the redline - it's quite literally on another level!

Individual vehicle output may vary based on vehicle condition, external parameters and method of testing.

Customer Reviews
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    United Kingdom United Kingdom


    What an upgrade from 285! The extra torque and power is felt straight away on boost and the carbon induction sounds even better! From the little whistle at low power and the revs going down to nice blow off sounds and a lovely whoosh when hard acceleration and changing gears! Couples with a st200 box and lsd it’s putting the power straight down and is keeping really well even in these colder months! Day to day driving around down it feels a lot less turbo lag and is just spot on! The only downside I can say is that I would have thought you got the immobiliser map like the m230 handset and the new 225/235 map that I was accidentally sent and appeared on that. Other than that I can’t fault it I’m really chuffed

    Ross P.
    United Kingdom United Kingdom

    Carbon intake m310

    Looks and sounds fantastic. You definitely notice the extra power after having the previous m285 for several years

    mountune m310 Power Upgrade Kit [Mk7 Fiesta ST] Review
    glenn j.
    United Kingdom United Kingdom

    m310 Power Upgrade

    It’s been a long time coming, waiting for the power upgrade, but I must say well worth the wait. You can hear the carbon fibre induction kit breathing as you put your foot on the accelerator. But nice and quiet when driving around town.

    mountune m310 Power Upgrade Kit [Mk7 Fiesta ST] Review