G99 Touring + Stage 1: Unlock Family-Wagon Fury Without Sacrificing Comfort
The Daily Driver That Doesn’t Compromise
The BMW G99 M5 Touring is a unicorn, a family car that packs serious performance, but for enthusiasts, the factory tune can feel conservative. Throttle response is muted, low-end torque is underwhelming, and the full M experience feels just out of reach.
If you’re thinking your G99 has more to give, you’re right.
The CarBahn Stage 1 Performance Controller for the G99 M5 Touring is the safest, smartest way to unlock that hidden power without voiding your warranty or compromising daily comfort.
Performance Gains Without the Trade-Offs
Many tuning solutions require removing and unlocking your ECU—a process that’s expensive, time-consuming, and warranty-risky. CarBahn’s Stage 1 Controller takes a different approach.
With no ECU unlock needed, the controller delivers noticeable gains in throttle response, midrange torque, and overall drivability. All of this in a fully reversible, plug-and-play package.
Four Reasons the Stage 1 Controller is Perfect for the G99 M5 Touring
1. No FEMTO Unlock Required
Most 2020+ BMWs, including the G99, require a costly FEMTO unlock to enable flash tuning. The CarBahn Stage 1 Controller bypasses this completely, keeping your ECU sealed and your warranty intact.
2. Performance You Can Feel Every Day
You’ll notice sharper acceleration, quicker throttle response, and more immediate torque delivery, ideal for highway passing, backroad carving, and daily commutes alike.
3. Maintain Luxury Comfort
Unlike aggressive flash tunes, the Stage 1 Controller preserves the G99’s quiet cabin and refined road manners. You get M5-level power without compromising comfort or NVH (noise, vibration, harshness).
4. Engineered by BMW Experts
Every CarBahn product is developed and calibrated by a team led by Steve Dinan, a legend in BMW motorsport tuning. The controller is dyno-tested, road-tested, and track-tested to ensure safe and reliable gains.
The Fastest Family Wagon Just Got Faster
Want your M5 Touring to feel like a supercar in disguise? With the Stage 1 Controller, your wagon transforms into a torque-rich, throttle-sharp daily weapon ready to haul groceries, kids, and beat sports cars off the line.
It’s the upgrade the G99 should have shipped with.
Frequently Asked Questions
Q: Does this upgrade affect comfort or cabin refinement?
A: No. The Stage 1 Controller enhances performance while preserving factory ride quality, shift smoothness, and quiet interior experience.
Q: Can I install it myself?
A: Yes. It’s a plug-and-play module that installs in about an hour with basic tools.
Q: Will this void my warranty?
A: Any aftermarket modifications can affect your warranty; however, our products are tested with vehicle safety in mind and come with the option of replacing your powertrain warranty for peace of mind.
Q: Is it safe for long road trips or everyday commuting?
A: Absolutely. All CarBahn products are engineered for real-world use, including extended highway drives, high-heat environments, and varied driving conditions.