HC Performance G8X S58 MultiMap — Pumpgas / E30 / E50 (Stock Turbo)

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.

What’s Included (Three Maps in One)

 - Pumpgas Map (93+ octane / 98+ RON)

 - E30 Map

 - E50 Map

Switch fuels and unlock the correct map instantly.

Real Dyno-Proven Results (AWD Dynojet)

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

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.

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.

Why BMW Owners Choose HC Performance

 - OEM-trained calibration and motorsport background

 - Hundreds of G8X and S58 cars tuned worldwide

 - Proven dyno results up to 740 whp on stock turbos

 - Fast communication and responsive support

 - Genuine custom tuning, not a generic file