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Stage 1, 2 and 3 figures and the price for your exact engine
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Mon-Fri 8am-5pm  Sat 8am-1pm  Sun closed
Unit 31 Integra, Parkwood Industrial Estate, Bircholt Road, Maidstone ME15 9GQ

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JFA dealer programme · Est. 2011 · Maidstone, UKTuning files, toolsand support for tunersDyno developed files, official tool dealer, UK live chat support

Everything a garage or tuner needs to sell remaps: dyno developed files for every stage, the tools to read and write them, and a UK team on live chat when a car is on the ramp. One dealer account, no joining fee.

Open a free portal account → Talk to the team →

Free account · pay per file, Stage 1 from £50 · Autotuner, KESS3, Flex and CMD supported

ECU JFA ~16 minutes 1 · Read 2 · Upload 3 · Portal 4 · Download 5 · Write Any slave or master tool · files written in Maidstone, UK
703Files last month
24Countries
833+Dealers
16Minutes average turnaround
What you get

Three things every tuning business needs

Tuning files

Stage 1, 2 and 3, gearbox files, and every delete and patch: DPF, EGR, AdBlue, pop and bang, DTC and more. Every file is developed on our own rolling road, not copied from a database.

The file service →

Tuning tools

Autotuner, Alientech KESS3, MagicMotorsport Flex, Flashtec CMD and the GYS battery stabiliser, with free training and a year of subscription where the tool has one.

Compare tools →

Support and growth

Live chat and a help centre while the car is on the ramp, a free vehicle search tool for your website, marketing help, and discounted tuning on your own cars.

Become a dealer →
How it works

From reading the ECU to a tuned car in four steps

1

Open a free account

2 minutes

Register on the dealer portal. No joining fee, no contract, no minimum order.

2

Top up, pay per file

Stage 1 £50

No bundles, no monthly fee. Top up your account in your own currency and each file is deducted from the balance as you order it. The balance stays on your account until you use it.

3

Upload your read

Any tool

Read the ECU with your tool, upload the original file and tick the options you want.

4

Download and write

~16 minutes

Your tuned file lands in your account. Write it, hand the keys back, invoice the job.

Open a free portal account → See file prices →

What a tuning file is

One file, a few hundred cells changed

Your engine control unit runs on maps: tables of fuel, boost and ignition timing for every engine speed and load. A tuning file is that software with the right cells recalibrated, checksum corrected, ready to write back.

Every JFA base file starts on our own rolling road, then is matched to the exact ECU and software version you read. Not a generic file from a database.

Boost target · mbar load ↑   rpm → 10017701825188019351990204521002155221022652225218521452105881660171517701825188019351990204521002155211520752035199576155016051660171517701825188019351990204520051965192518856414401495155016051660171517701825188019351895185518151775521330138514401495155016051660171517701825178517451705166540122012751330138514401495155016051660171516751635159515552811101165122012751330138514401495155016051565152514851445161000105511101165122012751330138514401495145514151375133510001500200025003000350040004500500055006000650070007500 Recalibrated by the tuner Factory value, untouched
File menu

What we write

Petrol, diesel and hybrid. Cars, vans, motorhomes and light commercials. If it is not on the list, ask: custom requests are part of the service.

Stage 1Stage 2Stage 3Gearbox / DSG / TCUDPF deleteEGR deleteAdBlue deleteO2 / decatSwirl flap deleteStart / stop disablePop and bangAntilagLaunch controlDTC deleteGPF / OPF offCylinder on demand offAGS deleteCold start deleteHot start fixMAF offVmax removalCVN fixSports display calibrationInjector scalingMAP sensor scalingImmo deleteCustom requests
Tools

The tools we sell, support and train on

We are an official UK dealer for each of these. Already own a tool? The file service works with all of them.

Autotuner tool

Autotuner

The tool we recommend to most new dealers: one payment, wide coverage, and no renewal to remember.

£2,650£2,100ex VAT, next-day delivery
Autotuner →
MagicMotorsport Flex case

MagicMotorsport Flex

Our choice for dealers who want the widest coverage and plan to add bench and boot work.

from £1,600ex VAT, slave
Flex →
Flashtec CMD tool

Flashtec CMD

For established dealers who do a lot of bench work and want the diagnostic suite in the same box.

from £3,105ex VAT, slave
CMD →
Alientech KESS3

Alientech KESS3

For dealers who tune more than cars: the coverage across bikes, marine, agricultural and trucks is unmatched.

from £1,700ex VAT, slave
KESS3 →
GYSFLASH 100.12

GYS GYSFLASH 100.12

Every dealer, every write. It is the cheapest insurance in the workshop.

from £814.98ex VAT
GYS 100A →
Dealers on the service

What dealers say

★★★★★

“I started using JFA around a year ago with a MK7 Golf GTI. Since then I have tuned over 150 vehicles using their service and my remap turnover is up by 40 percent over the previous year. Ask to see the dyno comparisons.”

Luke Oliver, Hy-Torque · Google
★★★★★

“Fast service, customer-waiting jobs are no problem, and the support from the staff is second to none.”

Jamie White, JRW Elite Automotive · Google
Worldwide

Dealers in 24 countries, one portal

The portal runs in 12 languages and takes card payment from anywhere. Files are written in Maidstone, Kent, UK and delivered to your account wherever you are.

Portal languages: English, French, German, Spanish, Italian, Portuguese, Swedish, Danish, Finnish, Polish, Turkish, Russian.

Prices are in GBP, ex VAT. EU businesses with a valid VAT number are not charged UK VAT.

EnglishFrançaisDeutschNederlandsEspañolItaliano
JF Automotive tuning workshop, Maidstone
Dealer enquiry

Ask us anything about files, tools or joining

A real person from the tuning team replies, usually the same working day. No sales script.

We use your details to answer this enquiry. See our privacy policy.

Dealer portal

Register on the dealer portal. No joining fee, no contract, no minimum order.

Open a free portal account →

01622 321500
  • Live chat and a help centre while the car is on the ramp, so you are never stuck with a customer waiting
  • Revisions free, and the file credited back to your account if we cannot tune the car
  • Pay per file and no monthly fee, so a quiet month costs you nothing
John Ford, JF Automotive
Speak to John Message me on WhatsApp. I read these myself. WhatsApp us
Questions

Dealer questions

Is there a joining fee or a monthly charge?

No. The portal account is free and there is no contract or minimum spend. You top up your account and each file is deducted from the balance as you order it.

Which tuning tools do you support?

All of them. Autotuner, Alientech KESS3 and KESSv2, MagicMotorsport Flex, Flashtec CMD, and any other slave or master tool that can read the ECU. Upload the read in the portal and we write for it.

How long does a file take?

Our average turnaround last month was 16 minutes. If we have already developed that ECU and software, our system matches the file and sends it straight back, 24/7, weekends included. New files are written by hand Monday to Friday 8am to 5pm and Saturday 8am to 1pm, UK time. Complex requests such as Stage 3 or custom gearbox work take longer and we tell you before you order.

Are the files dyno developed?

Yes. Every base file is developed on our own AWD rolling road in Maidstone, and we publish the dyno comparisons. Ask the team for the sheets on any engine you are quoting.

Do you sell to dealers outside the UK?

Yes. We have dealers in 24 countries. The portal runs in 12 languages, prices are in GBP ex VAT, and EU businesses with a valid VAT number are not charged UK VAT.

What if a file does not work?

Tell us on live chat with the car still on the ramp and a revised file is written at no extra cost. If the car cannot be tuned, the file is voided and the full amount is credited back to your account.

Can I tune my own cars at a discount?

Yes. Dealers get discounted tuning on their own vehicles, and access to our parts and exhaust range at trade prices.

Do you train me on the tool?

Yes. Every tool we sell comes with free training, and we run refresher sessions as the tools evolve. Most dealers are writing their first file the day the tool arrives.

Next

Related

File service

Upload the read from your tool, tick the options, and a file written on our own rolling road lands in your account in around 16 minutes. Stage 1 to Stage 3, gearbox, and every delete and patch. No contract, no minimum.

See the file service →

File prices

A Stage 1 is £50, a Stage 2 £80, a gearbox file from £50, and each option has a fixed price on top. Top up your account in your own currency and each file is deducted from the balance as you order it. No bundles, no monthly fee.

See file prices →

Tuning tools

Autotuner, Alientech KESS3, MagicMotorsport Flex, Flashtec CMD and the GYS battery stabiliser, with free training and a year of subscription where the tool has one.

See tuning tools →

Dealer locator

Find a JFA dealer near you, or get on the map when you join.

Open the map →
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The JF Automotive team
Meet the team

The team behind every job

Technicians, calibrators and the front desk, all in Maidstone. No call centre and no subcontracting - the person who books you in is the person you can ask about the job.

Meet the team →
Newsletter

Offers on parts and tuning, first

A short email now and then: new vehicle support, parts deals, open days. Nothing daily.