E9X M3 ECU Tune – HTE Performance

E9X M3 ECU Tune – HTE Performance

Exclusively Distributed Worldwide by Euro Power Motorsports

Experience the pinnacle of naturally aspirated V8 tuning with the HTE Performance ECU Tune, engineered for the iconic E90 | E92 | E93 M3 with the S65 engine.

Developed by enthusiasts who live and breathe the platform, this tune is built on real-world testing — dyno, street, and track. It’s been validated across temperature extremes and in varied driving conditions to deliver raw power, refined drivability, and long-term reliability.

And it’s available exclusively through Euro Power Motorsports, the official worldwide distributor for all HTE tunes for E-chassis BMWs.

Tuning Options

Stage 1

Designed for stock or lightly modified S65s running OEM cats. Clean, smooth, and emissions-safe with great real-world power gains.

Stage 2

Built for setups with test pipes, headers, or intake upgrades. Calibrated to maximize airflow and suppress post-cat CELs (for off-road use).

Power Gains

Even in stock form, the S65 is capable of more — and this tune proves it.

Stock Engine

✔️ +15–20+ WHP / TQ (dyno-verified)

✔️ Sharper throttle input and faster response

✔️ Stronger midrange and smoother powerband

✔️ Improved VANOS control, ignition timing, and torque modeling

Features 

✅ Top speed limiter removal
✅ Cold start delete – ideal for catless or loud exhausts
✅ MAF-based tuning – for standard bolt-on configurations
✅ Smooth power delivery – no dips or flat spots
✅ CEL suppression – for off-road/catless use
✅ Emissions-ready Stage 1 – readiness monitors intact with stock cats
✅ Fully retains factory knock control & safety features

Remote Tuning

You can use your own cable (including BimmerGeeks or compatible K+DCan cables), or purchase one directly from bimmergeeks.net. Once your order is placed, we’ll email you the download link for the HTE flashing tool along with step-by-step instructions to guide you through the process.

It’s a simple plug-and-play setup you can complete from your own garage — with full support and remote revisions included if needed. 

Why HTE & Why Us

We didn’t just choose any tuner. After researching and interviewing tuning experts around the world, we partnered with HTE Performance because of their:

• Proven credibility in the BMW M community
• Deep platform knowledge of the S65
• Exceptional customer support and calibration quality

This is the tune I run on my own personal car — and I stand behind it because I’ve tested it myself. We don’t overcharge for software. We believe real enthusiasts deserve real performance at a fair price. This is