Engine Tuning Pack B58 - M140i/M240i

BMW B58 Engine – M140i / M240i

One of Our Favorite Performance Platforms

At JWS, the BMW B58 engine is easily one of our favorite modern performance platforms. Known for its impressive strength, efficiency, and exceptional tuning potential, the B58 provides a rock-solid foundation for reliable power gains at any level—whether you’re just beginning your build or aiming for higher-stage performance.

We’ve spent countless hours working hands-on with the B58 platform, and it consistently delivers. With the right combination of supporting modifications, this engine responds incredibly well to smart, well-matched upgrades, making it a standout choice for enthusiasts who want dependable power without compromise.

Build Your Ideal Setup with Our Box Builder

Take the guesswork out of upgrading with our Box Builder. Easily customize your B58 setup by selecting components that align with your performance goals. Our builder lets you view compatibility at a glance and create a complete, tailored package—all in one place.

✔ Choose proven parts
✔ Ensure proper compatibility
✔ Build a setup designed around your goals

Start building your B58 the right way.

(PLEASE NOTE THAT ALL TUNING IS CARRIED OUT AT JWS ON OUR BAPRO DYNO - SHOULD YOU REQUIRE ASSISTANCE WITH FITTING ANY PARTS SELECTED THEN DROP US A MESSAGE AND WE WOULD BE HAPPY TO GIVE YOU A FITTED PRICE)