RaceChip GTS Black + App Bluetooth Tuning Box for BMW M3 G80 / M4 G82 Competition - S58 Plug & Play Piggyback Performance Chip Power Module, ECU Powerbox, Stage 1 Remap Alternative, Up to +140 bhp

Bluetooth-Controlled Performance Module for BMW M3 G80 and M4 G82 Competition

Unlock serious gains from your S58 with the GTS Black + App power module. This premium plug-in piggyback is the smart remap alternative for the BMW M3 G80 and BMW M4 G82 Competition, delivering huge horsepower and torque increases with on-phone control and full engine safety systems retained.

Why enthusiasts choose this upgrade

• Massive performance uplift for the S58 platform, with headline gains of up to about +140 bhp on this application. Figures are vehicle dependent and estimated.
• Up to 30 percent more power from model-specific calibration for sharper throttle response and stronger mid-range pull.
• App control via Bluetooth for on-the-fly adjustments and fine tuning without tools.
• Simple plug-in fitment in around 10 to 15 minutes with no permanent ECU changes.
• Engine protection systems remain active for peace of mind.
• Potential fuel saving of up to 1 litre per 60 miles through torque-led driving. Savings are indicative only.

Pro-grade hardware

• ARM Cortex-M3 processor for fast, precise signal processing.
• Up to 7 analogue and digital channels for comprehensive control.
• Chip electronics with Nano-Protect coating for durability.
• Heat resistant composite housing and professional FCI automotive connector.
• Secure pro mounting system.
• Dimensions mm: L 112 x W 111 x H 36.

Vehicle-specific software

• Calibration: v2.0_GTSBlack tailored to the BMW S58 in the G80 and G82 Competition.
• 7 fine tuning maps to suit your driving preference.
• Engine Protect System Plus keeps factory safeguards intact.
• Warm-up timer so extra performance only engages once the engine is ready.

Backed by warranties

• 5-year product warranty as standard, reflecting the premium components and build quality.
• 2-year engine cover up to £8,000. Valid up to 60,000 miles and a maximum vehicle age of 5 years, applies even if the manufacturer warranty has expired. Covers all major engine components. Terms apply.

Installation and fitting

Plug-in harness, no cutting or coding required. Most installs take 10 to 15 minutes. Prefer professional fitting or a health check on your car before installation

Book with MJ Modifications in Warwickshire for expert fitting. Request a quote at info@mjmodifications.co.uk.

Real-world results

We run this upgrade on customer S58 cars and the feedback has been outstanding. Stronger acceleration, effortless overtakes and smoother delivery, all while keeping factory safety strategies in place.

Compatibility and search-friendly terms

Perfect for drivers searching for BMW G80 M3 power upgrade, BMW G82 M4 Competition tuning module, S58 performance chip, plug and play ECU piggyback, remap alternative, Bluetooth tuning for BMW, horsepower and torque gains, smartphone controlled tuner, chip tuning unit, powerbox and stage 1 alternative with no ECU flash required.

Note: Power and efficiency figures are estimated and will vary with vehicle condition and setup.