McLaren JB4 Performance Tuner for M838T Engines - Burger Tuning s5 b9 This HPFP upgrade is compatible

This HPFP upgrade is compatible with the following Gen 1 B58-powered BMW models:

What's Included

It is recommended to replace this vent hose every 50k miles

and/or fuel trims

The ARM F3X FMIC spreads the total volume of the FMIC core forward and taller to make the total frontal surface area larger

McLaren JB4 Performance Tuner for M838T Engines - Burger Tuning s5 b9 This HPFP upgrade is compatibleInstant Horsepower and Torque Gains The JB4 is a plug and play McLaren tuner that plugs into easy to access sensors in the engine bay and works with your factory ECU tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10 bit digital to analog converters, ensuring smooth and powerful performance. No ECU flash