Technodiagnostics For all your diagnostic needs
Watford · Bushey · Hertfordshire

Car remapping in Watford and Hertfordshire, since 2000.

We've remapped thousands of vehicles for private owners, workshops, and trade customers across Watford, Bushey and the surrounding Hertfordshire area. Stage 1 and Stage 2 performance maps for petrol and diesel, all using files from the leading tuning house in Europe.

Not after a remap? We also offer mobile vehicle diagnostics across Watford and Hertfordshire, fault codes and live data read at your place.

Doing remaps since
2000
Vehicles remapped
1000s
Files from
Leading tuning house in Europe
Get a quote

Send vehicle details. We'll quote back within the hour.

Include make, model, year, engine and what you want done. Quickest answer is by phone.

  • UK warranty
    Hardware support we own
  • Free on-site demo
    We come to your workshop
  • Training included
    Real vehicles, real work
  • Phone-first support
    Speak to Andrew, every time

What we do.

Six categories of remapping and tuning work, covering most of what workshops and private owners need. Every make, every major manufacturer.

Performance remap

Stage 1 and Stage 2 tunes for petrol and diesel vehicles

More torque, sharper throttle response, smoother power delivery without compromising reliability. We use validated files from the leading tuning house in Europe.

DPF diagnostics

Forced regen and fault diagnosis

Blocked DPF that won't regenerate? Endless dash warnings? We force a regeneration and diagnose the root cause so the system works as it should.

EGR fault-finding

Diagnosis for EGR-related faults

EGR valves are one of the most common failure points on modern diesels. We diagnose EGR-related faults and warning lights and advise the right fix for your vehicle.

AdBlue diagnostics

SCR diagnosis and fault recovery

AdBlue faults are tough to diagnose without proper kit. We diagnose the SCR system and recover faulted units to get the vehicle running properly again.

Trade & workshop remapping

No tuning kit of your own needed

If you're a workshop or mechanic without your own tuning hardware, we come to you and map the vehicle on site. Your bay stays productive, the remap gets done, you bill the customer the full job.

Mobile call-out

We come to your workshop or to the vehicle

Watford, Hertfordshire, Bushey, and surrounding areas. If the vehicle won't move, or it makes more sense for us to come to you, we bring the equipment to your bay.

How it works

What actually happens when we remap your car.

No mystery to it. Here's the whole job, start to finish, so you know what you're booking before you call.

  1. 1

    You call with the vehicle

    Make, model, year, engine and what you're after. We'll tell you straight away whether there's a worthwhile gain to be had on your car.

  2. 2

    We confirm the right map

    We match your exact ECU to a file from our European tuning house. The calibration is already validated on your engine, not guessed at.

  3. 3

    We read, write and verify

    We connect at the OBD port, back up your original map, write the new one and check it took cleanly. Around 30 to 60 minutes on most vehicles.

  4. 4

    Road test

    We drive the car and check it pulls cleanly through the rev range, with no warning lights and no rough edges. If something's not right, it doesn't leave like that.

What a remap gains you, by engine type.

We remap any make and model. What you'll gain depends mostly on the type of engine, not the badge. These are realistic Stage 1 ranges on a healthy, standard vehicle. Your exact numbers come down to the specific car, which is why we quote per vehicle rather than off a chart.

Engine type Typical Stage 1 power Typical torque What you'll feel
Turbo diesel +25% to +35% +50 to +90 lb-ft The biggest real-world gain. Strong mid-range pull, easier overtaking and towing, and often slightly better economy if you keep your right foot honest.
Turbo petrol +20% to +30% +30 to +70 lb-ft Sharper throttle response and a noticeable shove once the turbo is spooled. The most common performance remap on modern petrol cars.
Naturally aspirated petrol +5% to +10% Modest Smaller gains with no turbo to lean on. Worth it mainly for crisper throttle response and smoother delivery rather than big headline numbers. We'll say if it's not worth your money.

Figures are typical Stage 1 gains on a standard, mechanically sound vehicle. Stage 2 gains assume supporting hardware is already fitted. Call us with your registration and we'll give you a realistic figure for your exact car.

Pricing, honestly

Why there's no price list on this page.

Plenty of tuning firms advertise a headline "from" price. The trouble is that number rarely survives contact with your actual car. Every ECU, engine and state of tune is different, and a map that's right for one vehicle can be wrong for the next.

So instead of quoting a figure we'd have to walk back the moment we see the car, we'd rather you tell us the vehicle and we give you a straight price for that job. No upselling, no bait number, and if a remap isn't worth it on your engine we'll say so on the phone before you've spent anything.

Why workshops and owners around Watford choose us.

Most of our remapping work comes from repeat customers and word of mouth. Three reasons why.

  • 25+ years remapping vehicles

    Andrew's been remapping in workshops since 2000. He'll know the right approach for your vehicle before the file is even loaded.

  • Validated files, not homebrew maps

    We don't roll our own maps. Every file comes from a major European tuning house with thousands of vehicle hours behind every calibration. Safe, well-validated tunes, not amateur experimentation.

  • Mobile service

    We come to you at your workshop or your home: Watford, Bushey, Hertfordshire and surrounding areas. If the vehicle can't move, a mobile visit is exactly what you need.

Looking to do your own remapping?

We also supply the hardware. Two standalone ECU programming platforms, depending on whether you want to be a master tuner yourself or work under one.

What customers say

People send us their car because someone told them to.

Read all reviews →
"Two breakdown services with diagnostics could not sort it. Within an hour of ringing Andy he was at my car, fully diagnosed it and had it back on the road within 24 hours. Very professional, amazing service, really know what they do and very fair prices."
Rachel
"So pleased with Andy. He came out on short notice and persevered until the fault was fixed after multiple others had tried. Explained each step and was an absolute joy to speak to. Reliable and really good price."
Kate
Areas we cover

Mobile remapping across Watford and the surrounding towns.

We come to you anywhere inside roughly 20 miles of Watford. Here are the towns we cover most. Don't see yours? Call and ask, we almost certainly reach you.

FAQ

Questions we get asked most.

How long does an ECU remap take?
Around 30 to 60 minutes on most modern vehicles once we're connected at the OBD port. Bench-pinout jobs extend that. We block out a one to two hour window so there's no rush at your bay.
Is ECU remapping legal in the UK?
A software remap is legal, and you should declare it to your insurer. We'll talk you through anything specific to your vehicle before any work happens.
What's the difference between a Stage 1 and a Stage 2 remap?
Stage 1 is a software-only remap on an otherwise standard vehicle. Stage 2 assumes supporting hardware changes such as an upgraded intercooler, a sports cat, and higher-flow induction. Stage 2 only makes sense if the hardware is already on the car. Most road vehicles we remap are Stage 1.
Will a remap void my manufacturer warranty?
A manufacturer warranty may not cover related faults after a remap. If the vehicle is still inside warranty we'll usually advise waiting unless you're prepared for that risk. For vehicles out of warranty it's not a concern.
Do you remap diesel and petrol vehicles?
Both. The bulk of our work is on diesel turbo and modern direct-injection petrol turbo engines, but we also remap naturally aspirated petrols where there's a meaningful gain to be had.
Do you come to my workshop, or do I bring the vehicle to you?
Both work. We come to you across Watford, Bushey and the surrounding Hertfordshire area, at your home or your workshop. Call and we'll arrange whichever makes sense for the job.

Ready to book a remap or get a quote?

Tell us the vehicle and what you want done. We'll come back inside the hour with a price and a date. Most jobs done at your home or workshop across Watford, Bushey and Hertfordshire.

Brands we supply

Brands we trust to do the job.