STAGE 3 REMAPPING

MAIDSTONE, KENT.

EXTREME PERFORMANCE UPGRADES BY JF AUTOMOTIVE

For drivers looking to unlock maximum power and performance, Stage 3 remapping is the ultimate upgrade. At JF Automotive, we provide custom Stage 3 tuning solutions designed for track enthusiasts and high-performance builds. By combining advanced ECU tuning with extensive hardware modifications, we push your vehicle to its full potential—while ensuring reliability and drivability.

WHAT IS STAGE 3 REMAPPING?

Unlike Stage 1 and Stage 2 remaps, which optimise factory components, Stage 3 tuning requires major performance hardware upgrades to significantly increase power output. This level of tuning is ideal for high-performance vehicles used on the track, fast road driving, or motorsport applications.

KEY UPGRADES FOR STAGE 3 REMAPPING

  • Upgraded Turbocharger or Supercharger – Increases boost pressure and airflow for extreme power gains.
  • High-Performance Fuel System – Larger injectors, upgraded fuel pump, and high-flow fuel lines ensure precise fueling.
  • Forged Engine Internals – Strengthened pistons, rods, and crankshaft to handle higher power and torque loads. (Vehicle Specific)
  • Upgraded Intercooler & Cooling System – Essential for maintaining consistent performance and preventing overheating.
  • Performance Exhaust System – High-flow downpipes, decat or sports cat, and cat-back exhaust for better airflow.
  • Standalone or Custom ECU Management – Advanced tuning to optimise fueling, ignition timing, and boost control.
  • Reinforced Clutch & Transmission Components – Upgraded gearbox, clutch, and differential to support increased torque.

Please note this dyno graph shows raw data measured at the wheels. Our system then calculates drivetrain losses to produce engine power figures.

WHY CHOOSE JF AUTOMOTIVE FOR STAGE 3 REMAPPING?

  • Industry-Leading Tuning Specialists – Years of experience in precision tuning for all makes and models.
  • Customised Performance Maps – Tailored remaps to suit your driving style and vehicle needs.
  • Safe & Reliable Tuning – All adjustments are within safe parameters to protect engine longevity.
  • State-of-the-Art Equipment – We use the latest remapping tools to ensure accuracy and efficiency.
  • Local & Trusted in Kent – Proudly serving Maidstone and surrounding areas with professional tuning solutions.

HOW DOES STAGE 3 REMAPPING PROCESS WORK?

  1. Vehicle Inspection & Diagnostics – We assess your vehicle’s condition before tuning.

  2. Hardware Installation – All required performance parts are installed.

  3. ECU Calibration & Custom Mapping – Software is tailored to optimise power, torque, and efficiency.

  4. Dyno Testing & Performance Logging – We measure gains and refine settings for peak performance.

  5. Road Testing & Final Adjustments – Ensuring smooth power delivery and reliability.

HOW MUCH POWER CAN I GAIN OVER STAGE 1 AND 2 REMAPPING?

The exact power gains depend on your vehicle’s make and model. However, most cars see an increase of 40-60% in power and torque, alongside improved fuel economy.

To find out your car’s potential enter your reg on our tuning vehicle checker!

FAQ's

Do you offer a 12 month warranty?

Coming soon…

What is motorsport use?

Motorsport-exclusive components are explicitly designed for track use. While they can be installed on any vehicle, it’s important to note that using such parts renders the vehicle unsuitable for road use and may result in MOT failure.

Will the lifespan of my engine be reduced?

No! Our remaps are designed specifically to improve the performance of your vehicle whilst remaining within the tolerances of your vehicles’ components.

Sadly, in attempt to achieve ‘big numbers’ some other companies over tune engines, placing excessive stress on the engine, transmission, cooling systems, etc, leading to reduced life span and reliability of the vehicle. We pride ourselves in producing reliable remaps which do not over stress your vehicle but still produce impressive results.

What is covered with the 30-day money back guarantee?

In any case where a customer is dissatisfied with any ecu remap software supplied, within thirty days of the supply date, the customer can request their money back. In order for any refund to be processed, the customer must present their vehicle to our workshop and allow our technicians to restore the vehicle to its original state. On successful completion JF Automotive will refund the cost of the remap to the customer.

No refund can be granted unless the vehicle is returned to the original state by JF Automotive. The 30-day money back guarantee only applies to stage 1 remaps and does not apply to other services like pops and bangs, parts or dyno sessions.
If another modification is purchased alongside a tuning file, which relies on a remap to operate, only the cost of the file is covered by this guarantee. We reserve the right to withdraw this 30 day money back guarantee.

Read full Terms and Conditions

Can the remap be reversed?

Absolutely. We offer this service free of charge if the vehicle is brought back to us. We’ll be very surprised if that’s what you want after taking one of our remap products, however in the case of lease cars some customers prefer to put the car back to standard before returning the car. You might want it back to standard if you are visiting a dealer for warranty or service work, again we will do this for free. Should you lose your tuning files due to dealer actions or parts failure we will be happy to re-install the map onto your car free of charge where possible.

What if a main dealer wipes the map with a software update?

No problem, simply bring the vehicle back in and we will take a fresh read of your ECU and write you a new map file free of charge. We offer this as part of our lifetime software support.

Do I need to notify my insurance company?

Whilst the remap is undetectable to dealer equipment, you should notify your insurance company of any modification to your vehicle. Many insurance companies do not penalise you for upgrades of this nature, particularly if you’re tuning for increased economy however a failure to disclose modifications may invalidate your policy. You may wish to enquire with your insurer if the modification will affect your policy prior to choosing one of our services.

Why we don't you offer ECU remapping for £200?!

We get asked, “Why do some tuners charge as little as £150?” There are a few factors as to why we do not offer remapping for £100-£200!

We supply custom written files for each vehicle that we remap that take in to account condition, milage and customer request of each vehicle. Our services are fully insured with a 30-day money back guarantee and lifetime support for the tuning software supplied. We constantly invest in the most up to date tuning and diagnostic equipment and software and we offer a quality service to all our customers.

Overall our custom supplied tuning software is of the highest standard that we know of, so if you want the best of the best, choose JF Automotive.

Meet The Team

Yaris GR Engine Tuning On Track

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