FastMaps Remapping Custom Tuning - Narberth

18/10/2026

🛻 Ford Ranger 3.2 Wildtrack 🛻

✅️ Custom Stage 1

3.2L engine, 200bhp and 470nm of torque from the factory - the only problem is.... they never really make the stock figures (often around 190bhp and 450nm (so let's see why).

Stock power delivery is quite lazy, and peak torque is over very quickly, and power tapers off heavily. This is due to a relatively small turbo on a fairly large 5 cylinder engine.

But - we can "fix" most of that - and here is how.
Vehicle initially datalogged and it's all good 📊

Looking at the software on these (ive tuned many), the key issues are in the "drivers wish" (torque request) maps, and of course torque limitation and monitoring plays its part here also, and the reference between the engine torque generated versus the fuel quantity delivered is not as accurate as it should be. So...

1st off - change the throttle pedal sensitivity (drivers wish), ask for more torque at LESS throttle pedal input ✅️. Torque limitation adjustment and increase per gear and against a variety of driving conditions such as atmospheric pressure ✅️. Boost pressure limitation and operational pressure increase (sensible). As well as a host of other changes the refinement also comes from recalculating and extrapolation of a more "true" fuel injected quantity to torque generation output. This now means we are injecting more fuel and a calculated level far tighter than the OEM fuelling caters for.

The result?

Sharper response, greatly improved power delivery, wider powerband (exhaust gas temperature model kept sensible due to having a DPF) and much better driveability.

Logs indicate 550nm and 232bhp so a very welcome increase.

Custom tuned, multiple software revisions and all changes in Winols5 shown and explained to the customer. This is why we are Pembrokeshires ONLY custom tuning specialist, no generic files, no flash and dash - nobody locally does what I do and you can take that to the bank 😉

📞 07784131060

🌎 www.fastmapsremapping.co.uk

🏡 Unit 17, Old School Industrial Estate, Narberth SA67 7DU

14/10/2026

✅️✅️ Pre drop-off checklist ✅️✅️
(Scroll down ⬇️ for the shocker 😂)

BEFORE you bring your car to me, the following things must be checked by YOU. I get so many cars dropped with me that arent safe or road legal and it results in you losing your deposit and the car not being worked on.

✅️ Tyres - must be legal 🛞
✅️ Brakes - must be legal ⛔️
✅️ Handbrake- must work ✋️
✅️ Fuel - sufficient fuel for custom tuning. As a rough guide a minimum of half a tank ⛽️
✅️ Windscreen - clean and not cracked
✅️ MOT + Taxed

💊💉 🌳 ❄️
And my personal favourite ... PLEASE REMOVE YOUR DRUGS FROM THE CAR!

Cant believe I even have to say the last one, but its fairly common people leave illegal substances in the car 😂. I operate a judgement free zone but please do not put me in a position where I have to call you to come back and removed your "stash". I'm not talking about your Paracetamol or your cough sweets. Im talking about Colombian Marching Powder and W**d so smelly it's enough to resurrect Bob Marley 😂😂.

Cheers all 👌

Pembrokeshires only, and leading custom tuning specialist and vehicle software development centre. See your vehicles potential tuning gains at www.fastmapsremapping.co.uk

This is our new Page as our previous page was hacked and deleted.

12/10/2026

Jaguar XF (Ingenium) MEDC17.9 - more pretty colours...

It's all part of a normal day, vehicle comes in, health checks completed. Original software copied from the vehicle.

Then it's imported into a variety of my software editing suites to start the tuning process. In this instance its Winols5, the most powerful editing suite available to the tuning industry.

When the original software is loaded into the database, I check for any 100% compatible or similar "files". In this case it's a software variant I've never seen before.

By using a similar software variant i was able to copy the "map" properties and apply correct offset, then approximately 20 minutes to locate and gather up a few sneaky "maps" that were hiding in the software.

You see, ECUs despite having different software tend to always follow the same "logic", and applying the correct "offset" then means everything lines up and makes sense.

We weren't looking for anything absolutely magical here, and instead a sensible power upgrade was required. 2 software tweeks and Im super happy with the car landing with a logged gain of just over 50nm of torque 👌.

It's this that completely sets us apart from the rest of the local "tuners". Our software is developed and tested in house - theirs is bought, slapped on and hoofed out of the door - fact. 💯 they can't explain, show or tell you how the car has been tuned.... but I can 👌.

📞 07784131060

🌎 www.fastmapsremapping.co.uk

🏡 Unit 17, Old School Industrial Estate, Narberth, SA67 7DU

11/10/2026

Sunday morning "Map Pack" creation and tuning on an MEDC17.9 ECU (Jaguar XF).

These have super lazy throttle pedal angles from the factory, and so a big part of making these "feel" better is to simply ask the engine for more torque with LESS throttle pedal input.

The result.... a more responsive "throttle pedal to engine power" curve 👌. Several hundred "maps" can be seen here and this is what differentiates us from the rest of the local Flash-And-Dash tuning companies.

28/09/2026

🇩🇪VW Transporter 102bhp 5 speed🇩🇪

✅️Custom Stage 1

These 102bhp Transporters with the 5 speed gearbox benefit hugely from our software upgrade.
102 bhp and 250nm when stock, they're lazy, lethargic, overtaking is impossible, hills are a chore and lofe is unbearable.

But - it doesn't have to be this way.
The weakness of this vehicle is its gearbox, so I delay peak torque until after 2600rpm, and i then cap torque at around 350/360nm as a means of protection. Sensible boost pressure increases and revised turbo control means boost request and boost actual are absolutely spot on as can be seen in the datalog. No nasty spikes, just a very smooth torque curve whilst keeping a super clean exhaust Lambda.

Generally our stage 1 sees these achieve 160+bhp and 350nm of torque overall. This greatly improves driveability and performance, and as a result overtaking becomes safer as does merging with traffic. No silly figures with these and no Heroic power spikes 👌

Custom tuning done the right way at Pembrokeshires only custom tuning specialist, I write and develop software in-house alongside multichannel datalogging techniques.

check your gains:
🌎 www.fastmapsremapping.co.uk

📞 07784131060

🏡 Unit 17, Old School Industrial Estate, Narberth SA67 7DU

26/09/2026

💥💣🔥 Crackle, Pop + Bang!! 🔥💣💥

One I often get asked about, and more often than not I refuse to do full-on Pop+Bang files for engines with less than 6 cylinders as it usually sounds absolutely horrendous. However, Audi RS54.2 V8 with MED17.1.x ECU, decat with resonator delete I recently tuned was the perfect candidate to add a little bit of audible "drama".

So....How is it done? Lets jump into Winols5 and take a look 👀

💥 "Crackle" is my preferred method of adding a bit of drama, the crackles are subtle without being overpowering and they do not create the same level of shockwaves a full Bang map creates and is definitely more component friendly (sill not without risks) - We can generally achieve this by simply adjusting the Overrun injection cutoff/DCO time. Usually when you lay off the throttle, the injectors shutdown drastically and they inject only the necessary fuel to maintain engine momentum. However as you can see in the pictures of the relevant "maps", we simply instead ask the injector to remain "open" for a commanded period of time (in this particular case an additional 2 seconds as can be seen in the table. This allows additional unburnt fuel to pass the Exhaust Valves and enter the exhaust, the fuel then finds sufficient heat in the exhaust, explodes and gives us a crackle - doing this means the majority of the "explosion" happens in the exhaust and not the engine. On anything with 6 cylinders and above, this can sound incredibly sexy. Many OEM high performance cars such as BMW and Audi have a minor over-run from the factory (often when in sport mode).

💣"Pop + Bang" - This is Hooligan mode. It makes children and old people run for their lives when they get startled by it 🙈. Its usually done by doing all of the above with crackle, however I then have to add a drastic negative ignition swing at low engine load.
In the timing charts in the images you will see the "staircase" effect where the purple negative figures ask the ECU to "re**rd" the ignition timing (as a general rule the more negative timing you add causes a louder bang - to a point). At roughly -21 degrees of (negative) ignition timing we create an explosion in, or much closer to the combustion chamber, this creates additional heat, shock and stress but causes an incredibly loud "bang" through the exhaust system and gives a harsh motorsport style exhaust note. If desired we can also make thing shoot flames.... 🔥
This can often be fully customised at certain RPM levels, and in this case was left so it only activated in Sport mode.
‼️DISCLAIMER - I'm always honest, these type of aggressive pop + bang tunes are likely to cause potential damage to engine and exhaust components, will probably p**s your neighbours off, and will attract the attention of the Rozzers 🚓🚓🚓 (you have been warned)

So yeah - that's how we make things noisy, hope it gives a brief outline of how its done and I'm sure its given useful insight for some of the local "tuners" who watch the page ;)

Custom tuning with software developed in-house, no slave or generic files - unique to this neck of the woods in . Drop me a message or visit the website for a quote.

📞 07784131060

🌎 www.FastMapsRemapping.co.uk

🏡 Unit 17, Old School Industrial Estate, Narberth, SA67 7DU

24/09/2026

Sneek peak into Winols5 - our main editing suite. The videos are of a DCM7.1 ECU from a 2020 Peugeot Boxer. You are able to see the "file" complete with "map pack" overlay.

The Map Pack translates the X and Y axis of each data table into useable information and correct conversion factors. It also then correctly interprets the "map data" so I can identify the exact data point/map I need to change in order to create additional power.

Without the map pack, we are effectively working blind although some ECUs use a common translation factor so I can occasionally work with raw data if necessary.

Maps can be viewed in many ways, Table view shows us X and Y axis data and the required data in the middle of the table, this is best for calculating required increase and selecting specific columns of data to change.

2d view - again shows data as a basic visial representation, i like using this view to quickly scan through the Bin file to locate things like torque limitation or drivers wish maps.

And also 3d mode - thats the pretty coloured visual representation showing axis data and main information. This view is great to check for smoothness for example in a torque request (drivers wish) or torque limitation map as it allows you to visually "shape" the torque curve. Massaging the 3d table helps to create silky smooth torque control. 3d view also clearly helps to identify any accidental "whoopsies" in a specific map, for example whereby in one column torque caps of 5100nm were added instead of 510nm.... big oops (wont lie I've accidentally done it before).

06/09/2026

🇩🇪 BMW M340i Xdrive 374bhp 🇩🇪

🔑 ECU Bench Unlock 🔓
✅️ Custom ECU Stage 1
✅️ Custom TCU Stage 1
✅️ Dashboard Recoding

Currently one of my favourite platforms to tune, and Bens M340i was absolutely peachy. First of all was to connect to the ECU and "unlock" it to allow OBD tuning. ✔️

Super low mileage and on a fresh set of spark plugs I knew as soon as the initial test drive and datalogging was complete that this was going to do exactly as it was asked. Flashed in my tested TCU (gearbox) tune and then flashed in via OBD the 1st ECU revision. Despite being on 99RON fuel, I always pull the ignition timing back to begin with to ensure additional safety and knock compliance. This was perfect.
Revision 2 and 3 saw many changes and I was able to feed in full ignition advance and still running 100% Knock-Free.

By the 4th Revision we had a more aggressive timing application than stock, sensible boost level, and as you can see by the datalog images, the car was making clean power with better than OEM boost control. Boost Request Vs boost actual - both tracking very tightly, this demonstrates excellent boost control from the boost "ramp" through the transient stages. (Images in comments)

The result with 99ron fuel is the power delivery right up to redline being a constant pull without that feeling of "tapering" that can occur on 95ron using a less aggressive engine timing strategy. Recoded the Sport Gauges to show the new peak power and torque figures, and Recoded the dashboard to show the 200mph speed limit (dashboard goes to 160mph stock which this car will now exceed).

The car feels epic, throttle response from 2000rpm upwards is phenomenal. Datalogs put this at a comfortable 430bhp and 580nm of torque, this is now a very capable car indeed.

We are fully insured to tune high end, performance, sports and prestige vehicles. We are also Pembrokeshires only custom tuning specialist. Software is developed, written and tested in-house by me

Check your gains here:
🌎 www.fastmapsremapping.co.uk

📞 07784131060

🏡 Unit 17, Old School Industrial Estate, Narberth, SA67 7DU

06/09/2026

🇩🇪 BMW 420d 2.0 190bhp 🇩🇪

✅️ Custom Stage 1

I've tuned countless BMW 2.0 diesel engines over the years to the point I've lost track. My Winols Database rarely doesn't have a 100% matching file.

So with this one it was a quick initial datalog, flashed in my tried and tested Stage 1 software, another datalog and job done. These achieve excellent gains without pushing then too hard so i prefer to leave them with a super clean calibration.

Gains of around 30bhp and 45nm of torque are fairly average on these, which may not seem like much, however due to a very lazy torque model from the factory this really does make them feel so much better.

We are Pembrokeshires only Master tuner and custom tuning specialist, we write and develop software in-house using a variety of tuning and editing suites 👌.

Checkout your vehicles gains here:
🌎 www.fastmapsremapping.co.uk

📞 07784131060

🏡 Unit 17, Old School Industrial Estate, Narberth SA67 7DU

29/08/2026

🇩🇪 BMW 4.4 X650i Twin Turbo V8 🇩🇪

🔑 Dual ECU bench unlocked
✅️ Custom stage 1 (Dual ECU)
✅️ Custom TCU Calibration (GEN3)

What can I say about this one... 530bhp and 750nm of raw grunt. Even at stock power levels this vehicle is blisteringly quick.

But the sneaky Germans always leave plenty of engineering headroom for us to exploit. This has 2 Bosch MG1CS201 ECUs, and it's only within the last 2 weeks we've been able to unlock these on the bench without sending the ECUs away. Both ECUs hooked up via bench, full backups taken, and unlocked 🔑. Software patch to allow OBD writing also.

Out for a datalog - perfect. Flashed in a TCU Calibration (gearbox), then flashed in a base file to both ECUs.

Multiple revisions later and the result is epic. Instant throttle response, datalogs support a very healthy 649bhp and 886nm of torque to finish up with.
I absolutely adore a V8, they offer a power delivery like nothing else. Sharp response, instant torque, breathtaking midrange and excellent top end power also.

Recoded the dashboard to show the 200mph (160mph as stock). Speed limiter removed, this vehicle would have a damn good shot at getting close to top speed. Although this took many hours, the result was absolutely worth it.

We wrote and develop custom tuning software in-house. Check your gains at:
🌎 www.fastmapsremapping.co.uk

📞 07784131060

🏡 Unit 17, Old School Industrial Estate, Narberth SA67 7DU