JB4 AntiLag (Anti-Lag) kit for BMW N54

Includes a programmed chip and wiring harness to allow on-the-fly anti-lag. Select a gear, hold down the volume button, floor the car, and once boost has built up release the volume button to instantly take off under full boost. Absolute must-have for rolling races of any transmission type and works well for automatics off the line too. Requires a BMS back end flash map and ethanol fuel is strongly suggested.

Installation directions and additional details are posted here.

Burger Motorsports shipping & returns

• 30-day satisfaction guarantee: BMS tuning products can be returned in like-new condition in their original packaging within 30 days of shipment for a refund.
• Fees: 20% restocking fee on all returns; the customer pays all shipping charges.
• Not returnable: spark plugs that have been installed or gapped, and wheel spacers, lug bolts, lug nuts or wheel studs that have been mounted.
• Express shipping does not guarantee a delivery date. Import duties and taxes are not included in the price.

To start a return or ask a question, contact us with your order number.