E6X M5/M6 ECU Tune – HTE Performance

E6X M5/M6 ECU Tune – HTE Performance

Exclusively Distributed Worldwide by Euro Power Motorsports

Unlock the full potential of your high-revving V10 with the HTE Performance ECU Tune — meticulously developed for the S85 engine and distributed exclusively worldwide by Euro Power Motorsports.

This tune transforms your S85: more power, sharper response, smoother delivery — and a noticeably more refined driving experience. Every calibration is built from the ground up using precision torque modeling, VANOS optimization, and map smoothing for the kind of performance gains you can actually feel — both on the dyno and behind the wheel.

Power Gains

Stage 1 (Stock or mild bolt-ons):

Even in factory form, the S85 has more to give — and this tune unlocks it safely and efficiently.

Stock Engine (No Bolt-ons):

✔️ +30 HP at 7800 RPM

✔️ +20 lb-ft torque at 6250 RPM

✔️ Peak gain of +35 HP at 8000 RPM

✔️ Sharper throttle response

✔️ Cleaner torque curve across the full RPM range

Stage 2 (Headers, exhaust mods, etc.):

✔️ Up to +40–60 HP with supporting mods

✔️ Adjusted fueling/timing for free-flowing exhaust

✔️ CEL suppression for catless setups (off-road use only)

Features & Options

✅ Rev limiter raised – up to 8600 RPM
✅ Top speed governor removed
✅ Cold start delete – quieter startups for loud exhausts
✅ Exhaust burble tuning – optional crackle/pops on decel
✅ Alpha-N tuning – for IAT relocation kits or MAF-delete setups
✅ MAF-based tuning – default option using OEM sensor
✅ Torque table optimization – smoother acceleration and gear changes
✅ SMG3 tuning – improved shift logic and engagement (if selected)
✅ Retains all factory knock, fuel, and safety protections
✅ Emissions-safe (Stage 1) – readiness monitors intact for street car

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 S85
• Exceptional customer support and calibration quality
• Fair Pricing Structure 

This is the tune I personally run — and we price it fairly, with no inflated software costs. Real enthusiasts deserve real performance, without the hype.

Abdul