Description
Stage 1 ECU/ECM Tuning Service – FixECM
Unlock Power • Improve Response • Enhance Driving Experience
What Is Stage 1 Tuning?
Stage 1 tuning is a software-only ECU/ECM remap designed to safely increase your engine’s power and torque without requiring any mechanical upgrades.
This upgrade focuses on optimizing factory parameters such as:
Boost pressure
Ignition timing
Fuel delivery
Throttle response
Torque limits
Air/fuel ratios
Speed limiter & rev limiter adjustments
Manufacturers leave a large amount of “hidden power” inside the ECU for reliability margins, emissions limits, and global market conditions.
Stage 1 tuning safely unlocks this potential.
What Is an ECU/ECM Remap?
An ECU (Engine Control Unit) or ECM (Engine Control Module) remap means rewriting and optimizing the original calibration file inside your vehicle’s computer.
FixECM modifies the OEM software to:
✔ Increase horsepower & torque
✔ Improve throttle response
✔ Remove factory restrictions
✔ Optimize fuel and timing maps
✔ Enable smoother, stronger acceleration
✔ Reduce turbo lag
✔ Improve fuel economy under normal driving
This is not a cheap “OBD-flash tool tune.”
FixECM performs full read → remap → checksum correction → bench test for maximum reliability.
How Much Power Will Stage 1 Add?
Power gains vary by engine, but typical Stage 1 increases:
Turbocharged Gas Engines:
✔ +35–70 HP
✔ +50–120 TQ
Turbocharged Diesel Engines:
✔ +40–90 HP
✔ +70–160 TQ
Naturally Aspirated Engines:
✔ +8–20 HP
✔ +10–25 TQ
Every tune is custom built for your specific ECU, not a universal file.
Local GTA/Toronto Customers
You can visit our shop directly for same-day tuning.
We remove the ECU (if required), remap it, test it, and reinstall—usually within same-day.
Canada & USA Mail-In Service
Not in Toronto? No problem.
Mail your ECU/ECM to us
We perform the Stage 1 remap
Bench-test all functions
Ship it back the same day
Fast turnaround • High reliability • Plug-and-play guaranteed.
Why Choose FixECM?
✔ Professional ECU bench tuning (not basic OBD flash)
✔ Real dyno-tested Stage 1 calibrations
✔ Safe, reliable, OEM-level quality
✔ No mechanical upgrades required
✔ Better drivability + stronger performance
✔ Local shop in Toronto + fast mail-in service
✔ 1-Year Warranty on all programmed ECUs
Victor Ramirez –
I recently got the Stage1 tuning service for my 2019 Mercedes-Benz C43, and the difference is incredible. The extra horsepower and torque really transform the driving experience, making the car feel more responsive and powerful at every rev. What impressed me the most was how smooth and hassle-free the installation process was—thanks to their professional ECU programming service, everything was plug-and-play with no issues. They also kept me in the loop throughout, answering my questions promptly and making sure I knew exactly what to expect. Shipping was quick and reasonably priced, which was a nice bonus on top of the excellent service. Overall, this tuning service exceeded my expectations and I would definitely recommend it to anyone looking to boost their C43.
Scott Sanders –
I was a bit nervous about tuning my 2019 Mercedes-Benz C43, but this Stage1 service exceeded my expectations. The whole process was straightforward thanks to their professional ECU programming, and I appreciated how they kept me updated every step of the way. Once installed, the boost in horsepower and torque was immediately noticeable—460 HP feels incredible on the road. Shipping was surprisingly fast and affordable, which made the entire experience even better. Highly recommend if you want a reliable, hassle-free performance upgrade.
Jacob Hill –
Fantastic upgrade for my C43—power increase is noticeable and the plug-and-play setup made installation a breeze. Plus, their communication was spot on throughout the whole process.
Neil Lewis –
I’m really impressed with the 2019–2021 Mercedes-Benz C43 Stage1 tuning service. The power boost to 460 HP and 490 TQ is noticeable right away, and the delivery was fast with free shipping included, which was a nice bonus. The installation was straightforward thanks to the plug-and-play setup they provide. Overall, the whole process was smooth, and the car feels much more responsive on the road.