BMW S55 Upgraded Downpipes Guide
BMW’s S55 engine comes from the factory with excellent power and torque for its small 3.0L design. However, for some, it’s simply not enough. Bolt-on mods are a popular option to push the S55 engine to 600+WHP. S55 upgraded downpipes (DP’s) are one of the key bolt-ons to unlock the S55’s true potential. In this…