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A Stage 1 remap takes the Mercedes-AMG A35 from 306hp and 400Nm to around 330hp and 490Nm on our rolling road. The CLA35 gains most of the family at around 355hp and 540Nm, and the GLA35 and GLB35 reach about 345hp. They all start from the same 306hp 2.0 turbo, so the differences come from the installation and the calibration room each body has rather than from different hardware.
MERCEDES A35, CLA35, GLA35 AMG TUNING
(2018 - Present)
Mercedes AMG models A35, CLA35, and GLA35 are popular choices for tuning enthusiasts due to their high-performance capabilities and customisation potential. These models come with a robust 2.0 litre turbocharged engine which can be further enhanced through various tuning options and upgrades.
Mercedes A45, CLA45, GLA45 AMG Stock Results
At stock the Mercedes A35, CLA35 and GLA45 AMG models produce 306BHP and 400Nm of toque. With the right modifications, these vehicles can achieve significant horsepower and torque improvements, and this process typically includes upgrading the ECU, exhaust system, and intake to maximise the engine’s output. Suspension modifications and brake upgrades are also common to ensure that the cars handle the increased power effectively.
SELECT A STAGE...
Mercedes A35, CLA35, GLA35 AMG Engine Tuning Options
JFA Stage 1 Tune for Mercedes A35, CLA35, GLA35 AMG: Gaining Power and Torque Effcienty
Our Recommended
Our JFA Stage 1 Tune is designed to enhance the torque and BHP of the Mercedes A35, CLA35, and GLA35 AMG by safely adjusting a range of parameters that control the engine performance such as fuel maps, ignition timing, boost control, throttle response, rev limiter, launch control, variable valve timing, and many others to ensure optimal results
At our tuning facility in Kent, we utilise our 2000 BHP Mustang 4WD Linked Dyno to rigorously test our tunes and guarantee the best outcome for our customers and each Mercedes receives a bespoke tune crafted in house, with the option to revert the vehicle back to its original settings at any time which is particularly useful in the event of a vehicle resale
We offer a 30 day money back guarantee along with lifetime support to provide our customers with confidence and peace of mind as engine safety remains our top priority.
Alternatives
Enhance The Mercedes A35, CLA35, GLA35 AMG with the JFA Speed-Buster Module
The JFA Speed-Buster Tuning Module is designed to elevate the driving experience of the Mercedes A35, CLA35, and GLA35 AMG by safely enhancing performance and guaranteeing increased BHP and torque while preserving reliability and every JFA Speed-Buster tuning module is custom built specifically for each individual models.
With a Plug & Play system, installation is quick and easy, taking only a few minutes however if you prefer expert installation, this service is available at our UK based facility in Kent
Additionally, the JFA Speed-Buster comes with a 2 year warranty, providing our customers with added peace of mind when making a purchase with us.
Mercedes A35, CLA35, GLA35 AMG Stage 1 Tuning Results
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- Mercedes A35 CLA35 GLA35 AMG
Please note this dyno graph shows raw data measured at the wheels. Our system then calculates drivetrain losses to produce engine power figures.
With this upgrade, customers can expect a large increase in power from the standard 300 BHP to an impressive 336 BHP, along with a torque increase of 510 Nm.
This upgrade is compatible with models of the A35, as well as the GLA35 and CLA35. Our Stage 1 tune will give you a noticeable enhancement in performance and driving excitement with our Stage 1 upgrade.
Tuning Options
Questions we get asked
How much power does an A35 AMG gain?
Around 330hp and 490Nm from a standard 306hp and 400Nm, on our dyno and on standard hardware. The torque increase of 90Nm is the part you feel, because it arrives well before the peak.
Do the CLA35, GLA35 and GLB35 gain the same?
Not quite. The CLA35 reaches around 355hp and 540Nm, the GLA35 about 345hp and 480Nm and the GLB35 around 345hp and 490Nm. All from the same 306hp starting point.
How does the A35 compare with the A45?
Different engines. The A35 uses the M260 2.0 turbo at 306hp; the A45 uses the M139 at 387 or 421hp and is a far more serious piece of engineering. An A35 remapped does not become an A45, and we would rather say so.
Do I need the gearbox tuned?
Not for Stage 1. These use a dual-clutch gearbox with its own torque limiter, which starts to matter if you go beyond Stage 1 or fit hardware. It also sharpens the shifts if you want it for its own sake.
What does Stage 2 need?
A downpipe with a sports cat and ideally an intake, then a file written around them. Tell us what is fitted or planned and we will give you a realistic figure before you buy anything.
Will it still pass an MOT?
Yes. Stage 1 changes no hardware, so the catalyst and every emissions component stay as they are. Your original file is kept so the car can go back to standard at any time.
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.
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.
