Currently reading: Mountune Ford Focus RS pack takes hot hatch to 513bhp
New M520 MRX upgrade pack dramatically ups performance for less than £6000, arriving alongside cheaper 444bhp option
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2 mins read
19 August 2019

Mountune has taken the Ford Focus RS to a whole new performance level with two new packages - the more powerful of them boosting the hot hatchback’s output to 513bhp. 

The new packages sit at the pinnacle of the long-established Ford tuner’s line-up for the Focus RS, with an extensive list of modifications including the removal of the 2.3-litre Ecoboost unit’s existing turbocharger in favour of “specifically engineered” BorgWarner items. 

In the lesser-powered ‘M450’ package - priced from £2950  - the new turbocharger allows an increase of 49bhp over the previous M400 package - up to 444bhp, with 428lb ft of torque. Both figures are considerably more than the recently released (and much more expensive) Mercedes-AMG A45.

As well as the new turbo, Mountune introduces a high-flow sports catalytic converter and exhaust downpipe alongside other ancillary upgrades to be fitted at Mountune’s Brentwood HQ, or available to order online soon.

But that’s just the start; the M520 package uses a more advanced BorgWarner ‘EFR 7163’ turbocharger, alongside an uprated fuel pump, camshafts and valve train. A recalibrated ECU allows this package to take the 2.3-litre engine to 513bhp and 516lb ft. 

That kit commands a minimum £5975 price tag and requires substantial internal engine modifications that are said to achieve the output levels “safely and reliably”, but will invalidate the existing warranty of the car, unlike some Mountune upgrade packs. 

Mountune doesn’t quote performance times for either pack, but given the latter puts out around 100bhp more than the fastest standard production hot hatchback, we can expect a 0-62mph time of well under four seconds. 

Read more: 

New Ford Focus RS Mountune kits add power and tech 

2020 Ford Focus RS to have 400bhp hybrid powertrain

Mountune launches new brand for VW Group upgrades

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Comments
12

19 August 2019

I'm not surprised it invalidates the warranty, even if others haven't! That is a crazy amount of power from a 2.3 engine. Just goes to show what it is capable of, though.

19 August 2019

 There are other brands out there with Engines like this, small capacity, loads of power and Torque, don’t think you’d market a massive power upgrade without exhaustive testing yourself, do they do their own cover?, I don’t know,and, it’s a lot of cash to fork out if...it might make your Engine go bang!

19 August 2019
The Oracle speaks.

Who can decipher?

20 August 2019
Peter Cavellini wrote:

 There are other brands out there with Engines like this, small capacity, loads of power and Torque, don’t think you’d market a massive power upgrade without exhaustive testing yourself, do they do their own cover?, I don’t know,and, it’s a lot of cash to fork out if...it might make your Engine go bang!

Many 2 - 2.2 litre engines are comfortably generating 600+kw these days.  I think these will be fine.

19 August 2019

"Cumshaws", ho ho spellcheck!

19 August 2019

Can only speak of the warranty experience I've had with past Fords and I'd say loosing it is no great loss.  Had to fight tooth and nail with Ford who never admited liability but finally offered 'goodwill' although if you have a corroded badge, they'll replace that no problem.

But when Montune say it'll invalidate the warranty - surely that's just the engine / upgrades? If the rear door lock mechanism fails, surely that's covered by warranty?

Heck of a power for a 2.3 four cylinder tho.

19 August 2019

What you still need on top of the £5975 worth of bolt-on parts...forged engine internals. Can't imagine that work would cost any less, that's big money.

19 August 2019

BOOM

...eventually

19 August 2019

What a beast. Love the Focus RS but it needs an update.

This is exactly what sets Ford apart from Vauxhall; a fun, cool, crazy side. Glad to hear of the resurrection of VXR, hopefully we'll see some great stuff out of them soon.

19 August 2019

 Next RS to be an EV.......?, shocked?, relax, it’ll never happen, will it?

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