There are moments in automotive tuning that redefine what we believe is possible. Our latest tuning session with AutoID’s BMW G90 M5 was one of those moments. The numbers alone tell an incredible story—717 BHP & 1000 NM in stock form, climbing to an earth-shattering 849 BHP & 1242 NM after we installed our top-of-the-line CRTD4 tuning system.
We knew this project would be special, but even we were left stunned by the final results. Every pull on the dyno brought something new, and by the end of the session, we had transformed an already monstrous machine into something truly out of this world. With AutoID documenting the entire process, we were able to capture every step of this remarkable transformation.
Here’s the full breakdown of how we unlocked the full potential of the G90 M5, what these figures mean in the real world, and why the CRTD4 tuning system is the ultimate performance upgrade for BMW’s latest super-saloon.
Meet the G90 M5: A Super-Saloon Unlike Any Other
The BMW G90 M5 is a machine that defies expectations. Equipped with a 4.4-litre twin-turbocharged V8 (S63 engine), the M5 has always been a powerhouse, but in its latest iteration, BMW has pushed things even further. Straight from the factory, this M5 delivers:
- 717 BHP
- 1000 NM of torque
These figures alone make the G90 M5 one of the most powerful sedans on the market, competing with high-end supercars in terms of sheer output. But as we know, BMW has a habit of leaving plenty of untapped potential within their engines, and that’s where we come in.
Baseline Testing: Measuring the M5’s Stock Performance:
Before making any changes, we needed to establish the car’s true stock performance. Strapped onto the dyno at MS Performance, the M5 laid down an impressive 717 BHP and 1000 NM of torque, confirming that BMW’s claimed numbers were no exaggeration.
Even in stock form, the G90 M5 is a force to be reckoned with. The way it delivers power is smooth yet aggressive, with immense low-end torque and a linear surge towards the redline. But as always, we knew there was room for improvement.
With the CRTD4 tuning system ready to go, we set out to push the limits of what this super-saloon could achieve.
The CRTD4 Tuning System: Precision Engineering at Its Finest
At TDI Tuning, we don’t believe in simple power gains for the sake of it. Every tuning system we develop is engineered to enhance performance while maintaining reliability, drivability, and efficiency. Our CRTD4 tuning system is the result of years of development, fine-tuning, and real-world testing, and it proved to be the perfect match for the G90 M5.
What Makes the CRTD4 So Special?
✔ Advanced Engine Optimization – The CRTD4 precisely recalibrates fuel delivery, turbo pressure, and ignition timing to extract maximum performance without overstressing components.
✔ Plug-and-Play Installation – No permanent modifications are needed. The system integrates seamlessly with the vehicle’s ECU, making it a reversible yet highly effective upgrade.
✔ Adaptive Performance Tuning – The CRTD4 dynamically adjusts based on engine load and driving conditions, ensuring power delivery is both smooth and controlled.
✔ Tested for Reliability – Unlike generic remaps, the CRTD4 system works within safe tolerances to ensure that the engine and transmission operate optimally.
With this cutting-edge technology in place, it was time to put the tuned M5 back on the dyno and see just how far we could push it.
The Moment of Truth: Dyno Testing the Tuned M5
The first full-throttle pull with the CRTD4 tuning system installed was electrifying. The power gains were immediately noticeable, and as the dyno results came in, we knew that we were onto a winner. It produced a staggering:
- 849 BHP
- 1242 NM of torque
This wasn’t just an improvement—it was a complete transformation. We had taken an already high-performance machine and elevated it into hypercar territory. The extra power was felt throughout the rev range, delivering sharper throttle response, brutal acceleration, and a newfound sense of urgency.
Even AutoID, who have seen their fair share of high-performance builds, was left speechless by the M5’s newfound capabilities.
How the Tune Transformed the M5’s Driving Experience
Raw numbers are one thing, but what really matters is how these gains translate to the road. With 849 BHP and 1242 NM, the M5 no longer just competes with supercars—it outright embarrasses them.
Acceleration: Relentless Power
The stock M5 is already blisteringly quick, but post-tune, the car’s acceleration is borderline savage. The additional 242 NM of torque makes launches even more ferocious, while mid-range power delivery ensures that the car pulls like a freight train in any gear. With that much torque, the feeling of launching the M5 was compared to being in a fighter jet, making both Steven from TDI Tuning and Nathan from Auto ID feel nauseous after doing one too many launches.
Throttle Response: Sharper, More Immediate
With the CRTD4 installed, throttle inputs are met with instantaneous power delivery. Whether you're feathering the throttle in daily driving or going full attack mode, the car responds with incredible precision.
Top-End Performance: Supercar Killer
Whereas the stock M5 begins to plateau at the higher end of the rev range, the tuned version just keeps pulling. With 849 BHP on tap, the M5 now has the power to chase down cars like the Ferrari 812 Superfast and Porsche 911 Turbo S with absolute ease. This is even more impressive when cars like that are developed to be high horsepower, lightweight performance machines, and the M5 weighs more than an X5.
Usability: The Perfect Balance
Despite the significant power increase, the car remains completely drivable in daily conditions. The CRTD4 system ensures that power is delivered in a smooth, controlled manner, meaning the M5 retains all its luxury and refinement—until you decide to unleash its full potential. Giving you the power to seamlessly accelerate past the competition, all whilst still maintaining complete luxury.
The Future of BMW Tuning: What This Means for M Owners
The results of our tuning session with AutoID’s G80 M5 confirm one thing—BMW M cars have immense untapped potential waiting to be unlocked. With the CRTD4 tuning system, M owners can experience significant power gains while maintaining reliability and drivability.
For those wondering whether tuning is worth it, this project is proof that the right tuning solution can completely transform your car. If a near-850 BHP, 1242 NM M5 doesn’t convince you, nothing will!
Final Thoughts: A Day to Remember
This was one of the most successful tuning projects we’ve ever undertaken, and we couldn’t have asked for a better partner than AutoID to document the journey. Their expertise in the automotive world, combined with our tuning expertise, made this project one for the history books.
The BMW G90 M5 is an engineering masterpiece, but with our CRTD4 system, it becomes something even greater. This is more than just a tune—this is the next level of performance.
For those who want to tune their BMW G90 M5 Get Started Here!