BMW Throttle Spacer
aFe Power • MSRP: $129
The Silver Bullet throttle spacer for the 2001-06 BMW 325i is built from T-6061 billet aluminum with a serrated/helix design that ensures a thorough mix of the air/fuel charge for a complete burn. The aFe design increases the volume of air between the intake and cylinders, improving the volumetric efficiency and thus the throttle response. It’s also claimed to provide an extra 10hp and 14 lb-ft. Furthermore, the company says it eliminates the annoying whistle at idle and cruising speeds.