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Sabre Tuning

Ford RS and performance car tuning specialists

28/05/2026

We are starting a new series of technical articles that will cover all aspects of performance and tuning. The aim is to create a repository that helps you understand the how and why beyond the general questions and what tuning your car really involves. First up!

Why unlocking the fuel system is so important for the Fiesta ST MK8 and Puma ST…

If you are running a hybrid turbo on the 1.5 EcoBoost, you’ve probably hit the infamous factory fueling wall.

Right now, standard Stage 3 tunes force a hard cap at 0.84 lambda. Why? Because the stock hardware simply cannot cope. While this level is just about "okay" for a clean dyno run, it leaves absolutely zero margin for error on the road in real conditions. If you catch a bad batch of fuel or do a long, high-speed pull, your ECU’s built-in safety nets are completely paralyzed. It wants to dump fuel to save your pistons, but the hardware won't let it.

The Sabre fix. 🛠️

Our upgrade isn't about blindly running rich or splashing fuel for the sake of it. It’s about headroom. The fuel system upgrade unlocks the volumetric capacity to supply down to 0.74 lambda all the way to redline.

When your ECU detects a spike in heat or knock, it finally has the capacity to instantly protect your engine on demand.

👉 Read the full breakdown at our technical article: https://www.sabre-tuning.co.uk/2026/05/28/why-unlocking-the-fuel-system-is-so-important-for-the-fiesta-st-mk8-and-puma-st/

16/04/2026

The ST MK4 continues to excel in all areas as we develop the platform further. We offer very detailed custom tuning to suit the individual driver and hardware set-up. A simple fact of life, we don’t all like the same things from food to hobbies, that much is true! So rather than cookie cut your generic tune, why not benefit from the Sabre approach that allows you to have the car that you would like…

Luke and his ST are no strangers to tuning, but this time he wanted something that works for him. The Sabre 450RS is a proven powerhouse turbo that opens up the performance of the ST 2.3 engine. Fast response akin to standard, but a powerband that pulls harder throughout and longer. With more power we need more control. A smooth linear power delivery was requested giving a progressive and then flat torque curve. Beyond this we dial in 1st and 2nd gear to give ultimate traction just on the side of slip, that’s the usable sling shot that even a FWD car can achieve.

The ST MK4 is growing into a serious platform with Sabre options for the manual and auto at all levels.

🔥427bhp & 425bs/ft 🔥

✅ Sabre 450RS turbo
✅ Stage 2 bolt-on modifications + 99oct fuel
✅ Sabre Stage 3 mapping
✅ Traction assist gears 1-2
✅ Live map switching – Low and high boost maps

For more information contact Sabre or click on the link below.

https://www.sabre-tuning.co.uk/product/sabre-450rs-hybrid-turbo-focus-st-mk4/

12/04/2026

A little bit of a hidden gem for the ST MK3 owners. The Sabre 400RS turbo fills the gap where you want fast response like standard, but where a Powermax or hybrid turbo leaves you really wanting more than just 310-330bhp.

Ben's car was remote e-tuned a couple of years back with multiple map options for different power levels and overrun burbles/pops to suit. This is a stock engine, just typical bolt-on modifications coupled with the 400RS turbo.

Many owners can be sold a package and a badge as being 300, 340 etc but rarely know if it is the real deal. Ben was quoted 360-370 and a recent dyno confirmed this with 367bhp & 346lbs/ft pulling from 2500-6500rpm. This is exceptional power, response and reliability for the ST MK3 platform. When your ST is faster than your dad's MK3 RS at "400", well the dyno only confirms what was already known!!

🔥367bhp & 346lbs/ft 🔥

✅ Stock engine
✅ Stock fuel system
✅ Stage 2 bolt-on modifications
✅ Sabre 400RS turbo
✅ Sabre Stage 3 mapping
✅ Multi-map options

For more information contact Sabre or click on the link below.

https://www.sabre-tuning.co.uk/product/sabre-400rs-turbo-focus-st-250-mk3/

16/03/2026

This is for the S-Max and Mondeo 2.5 Turbo owners. While it features the same engine and turbo as the ST MK2, the ECU is a different variant that is certainly a little more complex for tuning. Variations in fuel pump and torque management don't allow the easy splash and dash "generic" tuning that is so common with the ST MK2. There are common complaints of low end hesitation and poor response. Yes it is not as exciting compared to the headline figures, but performance and drivability are everything under all conditions.

Of course we can achieve both, and this S-Max gains 🔥62bhp & 102Nm🔥

Options for Stage 1 through to Stage 4.

Thanks to our Czech dealer at JC Auto who offer our full range of tuning and upgrades.

11/03/2026

🔥 Focus ST MK4 Auto - Stage 3 🔥

Just completed this awesome ST MK4 Auto for our dealer down under in Sydney, Australia! We continue to lead the way in ST MK4 development resulting in exceptional power, drivability and performance. This car really delivers in all areas with relentless performance resulting in a sub 10 second 100-200kmh...

The Sabre Stage 3 calibration coupled with our auto box calibration is key to bringing the absolute best performance from the ST MK4 and ST MK4.5 platform.

✅ Sabre Stage 3 - power from 400 - 460bhp
✅ Sabre Auto gearbox calibration
✅ Faster gear changes - Optimised Shifts - Torque Management
✅ Full remote e-tuning via the Sabre BluTune.

⚠️ LATE MODEL ST 4.5 LOCKED ECUS NOW AVAILABLE FOR FULL E-TUNING VIA THE SABRE BLUTUNE ⚠️

https://www.sabre-tuning.co.uk

13/02/2026

We often talk about big power, but not so often big power coupled with big response. It is the holy grail to any set-up where instant response and torque is available, this is what makes any car quick when you need it. So extend the response and introduce big power where you start quickly but finish even bigger. This is the Sabre 500RSX turbo for the RS MK3.

We have exceptional low end torque reaching 500+lbs/ft (675Nm), this is available on tap. Moving further up the range we then introduce the big power that the 500RSX can achieve giving performance up to 520bhp.

For Lee's car we have an exceptional result of 511bhp & 506lbs/ft on 99oct fuel.

✅ Forged engine
✅ Uprated FMIC
✅ 3" sports cat exhaust
✅ Piper 285 cams + spring kit
✅ Sabre Stage 1 HPFP
✅ Sabre 3.5bar MAP sensor
✅ Sabre 500RSX turbo kit
✅ Sabre Stage 3 mapping (99oct)

For more information - https://www.sabre-tuning.co.uk/product/sabre-500rsx-turbo-focus-rs-mk3/

10/02/2026

Time for some Puma ST development, and this is for the ST 1.0 MHEV Powershift option. We started this last year and now have Stage 1 options for 95 and 99oct.

This is a very refined tune that sees gains throughout with a very strong mid-range. With power up to 190bhp & 290Nm on a 99oct fuel, or 182bhp & 280Nm on normal E10 95oct fuel.

The headline figures do not complete the full picture with peak gains of 22-25bhp & 35-40Nm in the mid-range. This is performance where you need and want it the most between 3500-4500rpm.

Sabre Stage 1
– Enhanced engine safety protections
– Exhaust valve delete (map slot variable)
– Cold start delete (optional)
– Cylinder deactivation delete (optional)
– Gear change rev hang delete (optional)

Available now - https://www.sabre-tuning.co.uk/product/sabre-stage-1-ecu-remap-software-ford-puma-st-170-mhev/

07/02/2026

Further developments for the iconic Focus RS MK1. We now offer a remote e-tuning solution that no longer requires sending the ECU. The full suite of Sabre options are available based on our upgrade paths.

This is a game changer for owners all across the globe, we now come to you.

✅ Stage 1 - up to 300bhp
✅ Stage 2 - up to 330bhp
✅ Stage 3 - up to 360bhp
✅ Stage 4 - up to 420bhp

The RS MK1 is exceptional, Sabre performance upgrades make it beyond exceptional...

16/01/2026

Exceptional ST MK2 from Hungary. Fully optimised with Sabre Stage 3 E-tuning:

🔥 419bhp & 595Nm 🔥

✅ ST Hybrid turbo
✅ Stage 2 cams
✅ 550cc injectors
✅ 5bar HPFP
✅ Bosch ST ECU & Firmware

Tuned on the road resulting in perfect performance and drivability. You don't see many back to back dyno runs tracing so tight unless everything is absolutely on point.

If you are interested in finally ditching the generic maps then take a look here:

https://www.sabre-tuning.co.uk/product/sabre-stage-3-ecu-software-focus-st-mk2/

16/12/2025

The power of Sabre E-Tuning!!

Wherever you are in the world, anyone can experience the full benefits and performance of Sabre custom mapping...

Jan is one of our dealers in the Czech Republic, and what a weapon he has created with a 4WD ST MK2 and RS turbo upgrade.

🔥 423ps & 552Nm 🔥

✅ 4WD Haldex conversion
✅ RS Turbo
✅ 1000cc injectors
✅ RS MAF
✅ ST ABS
✅ Bosch ST ECU & Firmware

Featuring our Stage 1 launch control and custom "Rally" style overrun.

Don't settle for old skool plug & play maps, get some Sabre Tuning!!

10/12/2025

Fantastic news for the Focus ST MK4.5 owners who own a late model after April 2024. What could not be tuned is now jailbroken!!

Contact Sabre for the full sweet of tuning, we are ready to go:

✅ Stage 1
✅ Stage 2
✅ Stage 3

Address

Castle Combe

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm
Saturday	9am - 1pm

Telephone

+447969165334

Website

http://www.sabre-tuning.co.uk/

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