Verified
Spools like a different car
Backpressure gone. Boost comes in a full 400rpm sooner and it pulls all the way to redline now. Fitment was dead-on — no massaging, no fighting the O2 bungs.
Marcus D.
CL550 Biturbo ECU Tune
Send in your ECU
$985.00
Sale price
$985.00
Regular price
$1,599.00
Skip to product information
C216 · M278
CL550 Biturbo ECU Tune
The Mercedes CL550 is an exceptional luxury coupe, but its true performance potential is often hidden behind conservative factory engine management. MBH Motorsports Performance ECU Tuning is the ultimate solution for owners looking to extract a little extra punch as...
- Chassis Mercedes-Benz CL550
$985.00
Sale price
$985.00
Regular price
$1,599.00
- Made in the USAPhoenix, Arizona
- Pay over time4 payments with Shop Pay
- 5-year warrantyFlowsport+ limited
On the dyno
What it puts down.
The gains listed for this part, measured at the wheels. Your numbers will move with the car, fuel and tune.
- Listed gain
Listed gains · at the wheels
Horsepower gain · with ECU tune
108 wheel horsepower gain
Torque gain · with ECU tune
138 wheel torque gain
From this part’s specs: +108 whp · +138 wtqShows the listed range, not a dyno sheet.
Inside the build
What sets it apart
Fitment
Built for these cars
-
C216C216M278
Your car on the list? You're good to go.
The details
Specs & details
The Mercedes CL550 is an exceptional luxury coupe, but its true performance potential is often hidden behind conservative factory engine management. MBH Motorsports Performance ECU Tuning is the ultimate solution for owners looking to extract a little extra punch as well as enthusiasts seeking to completely unlock the full capabilities of their vehicle.
Our advanced ECU maps have been meticulously developed through countless hours of rigorous testing on the dyno. These custom calibrations are specifically engineered to work in perfect harmony with the MBH Motorsports downpipe system, completely transforming the driving dynamics and delivering staggering power gains of +108 horsepower and +138 ft-lbs of torque.
Please note: Exact performance results may vary based on the specific vehicle, dyno type and settings, ambient temperature, fuel quality, overall engine health, and other environmental factors.
Precision Calibration & Reliability
We don't just turn up the boost; we optimize the entire engine management system. By recalibrating fuel mapping, ignition timing, and throttle response, this tune provides a massive increase in raw output while retaining the smooth, refined drivability the CL-Class is known for.
Key Features:
-
Massive Output Gains: Engineered to deliver an incredible +108 HP and +138 TQ.
-
Rigorous R&D: Custom ECU maps designed and perfected over countless hours of dyno testing and data logging.
-
Hardware Synergy: Specifically calibrated to maximize exhaust flow, spool time, and performance when paired with MBH Motorsports downpipes.
-
Optimized Drivability: Delivers a relentless surge of power without sacrificing luxury refinement.
-
Variable Conditions: Real-world performance designed to adapt, though exact peak numbers may vary based on car, dyno settings, and temperature.
Compatibility:
-
Chassis: Mercedes-Benz CL550
Disclaimer: For off-road racing and competition use only. This product is not intended or legal for installation on registered, licensed vehicles operated on public roads or highways.
Send in your ECU
$985.00
Questions about this part?Email us your question or VIN.
Email us
Email us
Straight from the owners
Built, bolted, proven
Real cars. Real dyno sheets. Here's what owners say after the headers go on.
5.0 / 5
3 verified builds
Ready for yours?
Before you order
Straight answers
The questions we get asked most.
Still not sure?
Email us your question or VIN and we'll confirm fitment before you order.
sales@mbhmotorsports.com
Will this fit my car?
It's built for C216 · M278. Pick your car in the fitment check at the top of this page to confirm. Not listed, or engine swapped? Email us your VIN and we'll confirm fitment before you order.
Where is it made?
Right here in the USA, in our Phoenix, Arizona shop.
Can I ask a question before I order?
Yes. Email us with your car and your question and we'll get back to you. If you're unsure about fitment, include your VIN.