BenzUnited Parts
ECU Tuning for Mercedes M112 E37 3.7L V6 – ML350, S350, SL350
ECU Tuning for Mercedes M112 E37 3.7L V6 – ML350, S350, SL350
Custom Tuning — Contact for Quote
This tuning service is custom-tailored to your build. Please contact us with your vehicle's year, model, engine, and mods for pricing.
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Custom ECU Tuning for M112 3.7L V6
ML350 · S350 · SL350
Unlock the full potential of your 3.7L M112 with a precision ECU calibration built for stronger torque, sharper response, and everyday reliability. Experience more mid-range punch, smoother power delivery, and a more connected driving feel—while keeping all factory safety systems active.
🔥 Performance Gains
- Up to +20 HP / +20 TQ (premium fuel, healthy engine)
- Factory Output: 232 HP @ 5,750 rpm / 255 TQ @ 3,000–4,500 rpm
The E37 retains the stroke of the E32 but is bored to 97 mm, with a 10.0:1 compression ratio—making it highly responsive to optimized ignition, fueling, and throttle mapping.
✔️ Why Our Tune Stands Out
- Immediate Pedal Response: Removes the dull, laggy feel.
- Factory Safeguards Retained: OEM knock and thermal protections stay active.
- Built for Longevity: Smooth torque delivery and refined drivability.
- Dealer-Safe: Discreet calibration designed for service friendliness.
🔧 How It Works
- Bench Flash Service: Mail your ECU to us. We read, calibrate, and flash it, then ship it back ready to plug in.
- Optional Induction Upgrade: Pair with a high-flow intake for even stronger mid-range (contact us).
📌 Supported Models (M112 E37 3.7L)
| Model | Years |
|---|---|
| ML350 | 2001–2004 |
| S350 | 2002–2005 |
| S350 4MATIC | 2002–2005 |
| SL350 | 2001–2006 |
Bring Your E37 to Life
Order now and feel the torque and response your 3.7L was meant to deliver.
Questions? Email us at benzunitedparts@gmail.com
