This option is for customers with a Mk3 Focus ST and wish to upgrade to MR300 using an mTune, and who fall into one of the following three categories:
Required hardware list:
Please note: Installing the MR300 calibration without the correct hardware list above may result in failure to make the quoted power / torque figures, abnormal running, detrimental fuel consumption or engine warning light illumination. In any such instance no warranty is offered or implied by mountune.
Each mTune is supplied complete with:
Please note: This calibration version is not compatible with vehicles in the USA. Please visit our dedicated website at www.mountuneusa.com
Having had all the parts fitted for MR300 I decided it was time to upgrade the map. Unfortunately I did this at the start of lockdown. So I was unable to drive the car. Now I'm back to work and using the car daily i feel it's a good time to review the map. It's great. Nice smooth power delivery. Not sure what I was expecting. My car was a strong 275 before and I cant really notice an additional 25bhp. What I can notice is the extra torque. And it makes the car much easier to live with. I think before on the MP275 map it was great but something was missing. The MR300 fills that gap. It's a no brainer if you have the hardware needed. The only down side is it never came with a new badge and you have to pay postage for an email.
You should've received an m-flag badge with this kit, so if you didn't, please contact our sales team. Glad you're enjoying the MR300 otherwise!
Bit confusing trying to update firmware to controller. Key wouldn’t be seen by laptop when trying to download but when I had a chat with the tech gurus at Mountune the confirmed it had auto loaded to controller. Connected to car and 5 mins later software download complete. Focus ST now total awesome with 300bhp on tap. Excellent purchase just visual upgrades now.
Installed the MR300 the difference is huge, the mtune easy to use the installation also super easy . Only problem is mounting on dashboard the wire not long enough and as i live in a hot climate hard to stick to dashboard.