Reviewed By Mark A (ALGOMA, WI) Reviewed for a 2003 BMW Z4 —4/20/2013 7:05 AM
The air intake for my BMW Z4 added torque and improved throttle response. I'm not sure I notice a HP increase. It's to early to know about improved fuel economy. It was very easy to install. It looks good too. Auto anything shipped promptly and my order arrived in great condition.