Toyota GR Supra A90 Tuning Box by AC Schnitzer - Plug & Play ECU Piggyback Power Box, Remap Alternative, Warranty-Friendly Performance Upgrade for Mk5 Supra (2018+, OPF/GPF) | Performance Chip, Tuning Module, CANBUS Engine Tuner

AC Schnitzer Power Upgrade for Toyota GR Supra A90

Turn your GR Supra into the car it should have been from day one. This AC Schnitzer add-on engine control unit delivers a serious uplift in punch and response, with road-proven reliability and everyday smoothness. It is the clean, reversible way to increase performance without touching the factory software, ideal for enthusiasts who want more pace while keeping dealer maintenance straightforward.

Built by AC Schnitzer in Germany, this premium tuning module integrates seamlessly with the vehicle electronics for precise, repeatable gains and OEM-like drivability. Our team has installed this upgrade on customer cars and our own demonstrators, and the feedback has been outstanding for acceleration, mid-range shove and confidence when overtaking.

Why this AC Schnitzer upgrade stands out

• Real-world performance boost with stock-like refinement and throttle precision
• No ECU flash required – the factory control unit remains unaltered
• Secondary control unit communicates via CANBUS for accurate, dependable control
• Dealer servicing and software updates remain straightforward
• 3-year AC Schnitzer warranty for the tuned engine and drivetrain, running alongside your Toyota warranty (conditions apply, from first registration)
• Designed for OPF/GPF variants and tested to WLTP standards, with filters covered within warranty scope
• Developed by experts with over 30 years of road and track know-how

What you will feel

• Stronger mid-range pull for quicker real-world acceleration
• Smoother delivery and crisp pedal response
• Effortless pace for safe, decisive overtakes
• Refined behaviour for commuting and long-distance driving

Search-friendly highlights

• Toyota Supra A90 power box and tuning module
• ECU add-on unit and engine controller upgrade
• Chip tuning style power pack without map rewriting
• Warranty-friendly performance tuner for Mk5 Supra
• UK and European OPF-compatible performance solution

Compatibility

Toyota GR Supra A90 2018 onwards.

Part number

1100190350-36

Fitting and support

Professional installation recommended. MJ Modifications offers expert fitting in Warwickshire with full aftercare. Request a quote at info@mjmodifications.co.uk.

Warranty and registration

Includes a 3-year AC Schnitzer warranty covering the tuned engine and drivetrain, designed to run alongside your Toyota warranty. For OPF-equipped vehicles tested to WLTP, the filters are included within the warranty scope. Product registration is required after purchase. Conditions apply.

Manufactured by

AC Schnitzer

More information

Click here for detailed technical information

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