Sprint Booster V3 Power Converter (BMW M4 G82/G83 2021+)

Eliminate BMW throttle lag instantly with the Sprint Booster V3 Power Converter — the world's most trusted plug-and-play throttle response controller for BMW. Compatible with all BMW models excluding X Series from 2002 to 2025, including the BMW M2, M3, M4, 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series and Z4 — across all engine variants and both manual and automatic transmissions.

Developed by Boulekos Dynamic, the original inventors of the Sprint Booster since 2005 and winner of the prestigious SEMA Best New Performance Street Product award, this is the genuine RSBD401 unit sourced directly from the manufacturer — not a rebranded version. If you've been searching for a BMW throttle controller, BMW pedal box, or BMW accelerator response upgrade, the Sprint Booster V3 is the proven solution trusted by BMW enthusiasts worldwide.

Why Does My BMW Feel Sluggish Off the Throttle?

Modern BMWs use an Electronic Throttle Control (ETC) system — commonly known as drive-by-wire — which introduces a frustrating delay between your pedal input and the engine's response. This throttle lag is especially noticeable on the BMW M2, M3, M4 and other performance models where instant throttle response is critical. The Sprint Booster V3 fixes this by plugging directly into your accelerator pedal connector and continuously converting the throttle signal sent to your ECM — delivering sharper, more immediate acceleration every time you press the pedal.

The result is a BMW that feels more alive, more connected, and more responsive — exactly how it should have felt from the factory.

3 Acceleration Modes — Fully Adjustable to Your Driving Style

The Sprint Booster V3 comes with three acceleration modes and 36 fully adjustable programs so you can dial in the perfect throttle response for any situation:

• OFF Mode — Sprint Booster deactivated, factory throttle settings restored
• SPORT Mode (Green LED) — throttle response improved by up to 30%, ideal for daily driving and spirited road use
• RACE Mode (Red LED) — throttle response improved by up to 60%, perfect for track days and performance driving

Each mode features 9 individually adjustable programs (1-9), allowing you to fine-tune your throttle response in small increments. Whether you're daily driving your BMW 3 Series or pushing your BMW M4 on a circuit, there's a setting for every situation.

Simple Plug-and-Play Installation — No Coding Required

Installing the Sprint Booster V3 on your BMW takes just minutes. Simply unplug the OEM connector from your accelerator pedal, plug the Sprint Booster in line, and mount the compact selector switch in the cabin using the supplied adhesive. No wire cutting, no ECU programming, no coding, and no permanent modifications to your BMW's electronics. It does not interfere with your BMW's ABS, traction control, or any other electronic systems.

Security Features — Pedal Lock and Valet Mode

The Sprint Booster V3 also includes two PIN-protected security features:

• Pedal Lock Mode — fully disables acceleration via a 3-digit PIN, preventing unauthorised use of your BMW
• Valet Mode — limits acceleration by 55%, 65% or 75% via PIN, ideal for when your BMW is being parked or serviced

Why Buy From Gridline Custom Motorsports?

Unlike other Australian retailers selling rebranded versions of the Sprint Booster, we source the genuine Boulekos Dynamic RSBD401 directly from the manufacturer in Greece — the original inventors of the Sprint Booster. No middlemen, no rebranding, just the real deal at the best possible price.

Key Features:

• Eliminates BMW drive-by-wire throttle lag instantly
• 3 acceleration modes — OFF, SPORT (up to 30%) and RACE (up to 60%)
• 36 fully adjustable programs — 18 for manual, 18 for automatic transmission
• Compatible with BMW M2, M3, M4, 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series, Z4 and more
• Pedal Lock mode — 3-digit PIN security
• Valet mode — 3 selectable power limitation levels via PIN
• Plug-and-play installation — no wire cutting or ECU coding required
• Ultra compact design with cabin-mounted selector switch
• Settings stored in memory — retains last setting even without switch
• TÜV tested and certified — European Conformity Type Approval (EC No. E24031712)
• SEMA Best New Performance Street Product 2010 winner

Important Information:

This product is intended for performance use and should be installed by a qualified professional.

It is the customer’s responsibility to ensure compatibility with their specific vehicle prior to purchase. If you are unsure, please contact us before ordering.

Gridline Custom Motorsports is not responsible for issues arising from incorrect installation, misuse, or improper product selection.

Due to the nature of performance parts, some items may be special order and subject to supplier availability and lead times.

Tuning Disclaimer:

Tuning products and ECU-related services are non-refundable once installed, activated, or used.

By purchasing, you acknowledge the risks associated with performance tuning, including potential impact on vehicle warranty and reliability.