CTZ Flasher Remote Tuning Service (2010 –2020+ Mercedes-Benz Vehicles)

Unlock the true performance of your Mercedes-Benz with our CTZ Flasher Remote Tuning Service. From C-Class, E-Class, S-Class, AMG models, GLE, GLS, and more — we make tuning simple, powerful, and convenient.

No unnecessary downtime — we ship you our CTZ Flasher and guide you through the process remotely.

⚠️ Important Note: For certain Mercedes models that cannot be tuned via OBD, we’ll switch you to our Ship-In Method. This means you’ll send in your ECU for bench unlock, and we’ll ship it back ready for tuning.

How it works:

✅ Place your order online (required before scheduling an appointment)
✅ We ship you our CTZ Flasher device or set you up with a local dealer
✅ You’ll need a laptop for remote tuning (Windows recommended)
✅ Once you receive your flasher, we book your tune appointment
✅ Our team remotely logs in and completes your custom tune

(If your vehicle requires bench unlock, we’ll provide shipping instructions for your ECU and return it ready-to-go.)

Features of the CTZ Flasher:

⚡ Store & switch between multiple tunes
⚡ Read & clear diagnostic trouble codes (DTCs)
⚡ Data logging for performance monitoring & adjustments
⚡ Compact, portable, and easy to use

Purchase or Borrow Options:

🔹 Borrow the Flasher → Included with service price (return it with the provided label after tuning)
🔹 Buy the Flasher → Keep it for future tuning, diagnostics, and data logging (+$800 upgrade fee)
(If you borrow the flasher and don’t return it, the purchase fee will be charged.)

Custom Add-Ons Available:

Take your Mercedes-Benz to the next level with options such as:

• Pops & Bangs

• Exhaust Burble Tunes

• Launch Control (where supported)

• Rev Limiter Adjustments

• Speed Limiter Removal

• Fuel Efficiency Tunes

• And more, tailored to your setup

Upgrade your Mercedes-Benz with confidence using the CTZ Flasher Method — and for models requiring a bench unlock, our Ship-In Service ensures you’re always covered.

NOTE: 2020+ ECU might need an unlock service first before tuning can occur. You will have to ship us your ECU for this. Please confirm with us if you require an unlock first.