BMS BMW N54 JB4 Anti-Lag Kit for 135i and 335i
Unlock instant boost with the genuine BMS BMW N54 JB4 Anti-Lag Kit for 135i and 335i. This Burger Motorsports JB4 anti-lag upgrade delivers rapid spool and hard-hitting acceleration for roll racing and fast launches. If you run a JB4 on your BMW N54, this is the anti-lag kit you want for sharper throttle response, quicker boost build and maximum performance between gears. Perfect for BMW 135i N54 and BMW 335i N54 owners looking for a simple, proven JB4 anti-lag solution.
Includes a pre-programmed chip and dedicated wiring harness to enable on-the-fly anti-lag using your factory controls. Select a gear, hold the volume button, go full throttle to build boost, then release the button to take off under full boost. It works brilliantly for rolling races and helps automatics get out of the hole harder too. We have run this kit ourselves on N54 JB4 cars and our customers love the instant response and repeatable performance gains it delivers.
Why choose this BMS JB4 Anti-Lag Kit
- BMW N54 JB4 anti-lag kit designed for 135i and 335i applications
- On-the-fly anti-lag control using the factory volume button
- Build boost before the hit for harder launches and faster roll-ons
- Crisp response between shifts for stronger acceleration
- Genuine Burger Motorsports hardware and calibration
- Proven upgrade for JB4-tuned N54 cars seeking instant boost
How it works
- Select your gear.
- Press and hold the volume button.
- Floor the accelerator to build boost.
- Release the volume button to launch under full boost.
Requirements
- Requires a BMS back end flash map
- Ethanol fuel is strongly suggested
- Must be used with the BMS N54 JB4
Compatibility
Compatible with BMW N54 JB4 vehicles, including BMW 135i and BMW 335i, with manual and automatic transmissions only.
Part Number
E-N54-JB4UG-AL
Installation and fitting
Professional installation is recommended. We offer fitting at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility check before dispatch
We will verify fitment before shipping. Provide your registration number for UK cars or the last 7 digits of your VIN at checkout so we can confirm compatibility with your BMW N54 JB4 setup.
Manufacturer and warranty
Manufactured by Burger Motorsports / Burger Tuning (BMS).
BMS do not offer warranty on this item.
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