The mountune m235 power upgrade for the all-new Puma ST provides a substantial uplift in the performance from the ST's 1.5-litre 3-cylinder EcoBoost engine, safely raising power and torque output; improving performance and drivability, whilst 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 additional months of in-cylinder pressure monitoring 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 'first stage' upgrade for your Fiesta ST, but also the most robust aftermarket calibration, too.

Peak power is increased to 235PS, whilst torque is uplifted to 350Nm 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 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!

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.

m235 SMARTflash includes four calibrations, with unique functionality:

m235 performance calibration

	Increased power and torque (up to 235PS / 350Nm)
	More aggressive launch control strategy
	Enhanced audible exhaust output in Sport / Track modes
	Optimised no-lift shift functionality

m235 ASMO performance calibration

	Increased power and torque (up to 235PS / 350Nm)
	More aggressive launch control strategy
	Anti Social Mountune Overrun Enhanced audible exhaust output in Sport / Track modes (for those who really like their pops and bangs)

Stock performance
Anti-theft

Please note: in order to update to our SMARTflash V2 release, you will now need to download our partner app, ECU Connect - once 'mountune' is selected within the tuner menu of the app you will have full access to the SMARTflash V2 features.

For assistance setting up and installing SMARTflash V2, please refer to the user guide, here.

Important: In order to achieve and maintain performance and reliability, the m235 upgrade should be used in conjunction with the hardware listed below. To achieve peak performance figures 97RON+ fuel should be used, however, it remains perfectly safe to use everyday and for all uses on 95RON fuel.

Recommended m235 hardware:

Induction kit or carbon induction kit

m235 supports all known regional variations 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!

The phone device is shown for illustration of SMARTflash app only, and is not included with this product.

Please Note: Whilst every effort is made to provide calibration support for all known available base variants, due to the number in existence, there may occasionally be a delay in enabling support for your vehicle. Should this be the case, options to provide this support will be made available, or you will be offered a full refund until specific calibration for your vehicle can be provided.

Autumn SMARTflash

mTune SMARTflash m235 Upgrade [Mk8/8.5 Fiesta ST]

mTune SMARTflash m235 Upgrade [Puma ST]