Why Everyone Is Swapping to x3m front mount intakes
If you're looking to squeeze every bit of performance out of your S58 engine, upgrading to x3m front mount intakes is usually one of the first things on the list. It's a modification that has taken the F97 community by storm, and for a good reason. While the X3M is already a beast right off the showroom floor, the stock airbox setup is designed more for "quiet comfort" and meeting strict efficiency regulations than it is for raw, unadulterated speed. ...