HC Performance G8X S58 Custom Map

Custom-calibrated power for BMW G8X M2, M3, M4 and F97/F98 X3M & X4M (including LCI)

Unlock the full potential of your S58 with a true OEM-calibrated multimap designed for real-world power, reliability, and flexibility. This is not an off-the-shelf tune. Every file is a tailored calibration built from our experience tuning hundreds of G8X platforms worldwide.

Whether you’re driving on pump fuel or pushing ethanol blends, this multimap gives you three completely optimized performance levels in one package.

Currently holding the world record on all BMWs on the standing half mile !

What’s Do We Offer For This Engine Type?

 - Pumpgas Map (93+ octane / 98+ RON)

 - E30 Map

 - E50 Map

 - FlexFuel Map (Pumpgas to E50 mixes - Requires a FlexFuel Sensor)

 - Hybrid Turbo Maps for both DI only setups with and without flexfuel and for those running REV2 and PI

- Single Turbo Setups with REV2

Real Dyno-Proven Results (AWD Dynojet)

These are the consistent wheel horsepower ranges we see on customer cars on stock turbo:

Pumpgas (93+ octane / 98+ RON): 600–640 whp
E30 Blend: 650–680 whp
E50 Blend: 700–740 whp

Results depend on fuel quality, hardware, and conditions, but these ranges reflect real data from multiple builds.

Hybrid turbo cars vary depending on turbo, on DI E50 we can push close to 800WHP on a proper hybrid turbo setup with supporting mods.

Required Hardware

To run this multimap safely and achieve the expected gains, the following modifications are required:

 - High-flow downpipes

 - High-flow midpipe

Recommended:

 - High-flow drop-in air filters

How It Works

 1. Complete your purchase.

 2. Open the bootmod3 app or web portal.

 3. Submit a tune request to HC Performance.
Include your modification list, your octane (for pumpgas), and your order number.

 4. We prepare and deliver your custom multimap.

 5. Flash the file, verify logs if requested, and enjoy the results.

Turnaround is fast. We calibrate and deliver maps daily.

Before You Buy

 - This multimap is for bootmod3 cars only.

 - If your vehicle does not have CustomROM, we can split the maps upon request.

 - Make sure to consult with us regarding your build if anything else than stock turbo application.