Been running the m260 upgrade for a month or so now and I can honestly say I'm seriously impressed! I have all the required hardware a few other bits and I can honestly say I was not expected the end result to be as good as it is! Excellent throttle response in all gears and the pull throughout the rev range is staggering! A nice bonus is that I have also gained an impressive improvement in economy too! Not long after fitting, I completed a 150 mile round trip and averaged 55mpg sitting at between 60-70mph. This car did it all to begin with and now does so even better!
Don't hesitate, Coming from the M235 to the M260 puts a smile on my face every time I plant the pedal.
Currently running on the m235 option and so far I'm very impressed. as I'm missing a vital piece of hardware to be able to run the full m260. Can't wait for the Charge Pipe Upgrade Kit [Mk8 Fiesta ST | Puma ST] to be available so I can run the full power