JB4 N54 2 STEP / NLS Relay

JB4 N54 2 STEP / NLS Relay

This add-on kit for BMW N54 engines allows your JB4 to "2step" the engine (cycle power to the coils) to build boost when not under load. Useful as both a noisemaker for both manual and automatic transmissions, and for launching with manual transmissions. It also allows No Lift Shifting (NLS) for manual transmission cars.

The relay kit requires a JB4, back-end flash map, and BMS data cable or JB4 mobile connect kit. Note that we've modified the JB4 firmware recently so that the clutch wire is no longer required simplifying the installation. Update your JB4 firmware before or after installation to v32_15 for twin turbo or v13_7 for single turbo to enable.

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.