Reviewed By Donald B (Portland, OR) Reviewed for a 2005 BMW 3-Series —6/30/2016 8:24 PM
More power gain than expected. Made a noticeable difference in throttle response. Very well made and install was a breeze
Reviewed By Dave N (Colorado Springs, CO) Reviewed for a 2005 BMW 3-Series —12/24/2010 3:54 PM
Overall, very good cold air intake system. In my M#, install took a bit, but not too difficult. Instructions were pretty spot on. Some angles to get in and tighten and fit were a pain. Instead of a metal heat shield, I would prefer to have a composite heat shield so air stays cooler even when engine is at temp. I would pay for another composite heat shield if they offered it.
Reviewed By Rudy F (Sugar Land, TX) Reviewed for a 2013 BMW 3-Series —2/15/2017 8:48 AM
Installed the SP1128WB SRI on my 2013 BMW 335i. Super easy to install. Instructions were great. I was looking for a CAI that sounded good, but not overbearing, with some increased throttle response. I get a nice BOV whistle that is smooth, and not a boy-racer "look at me I have a turbo" noise. Can't really hear it inside too much with the windows up, and definitely can't hear it if the radio is on at any volume. Sounds great on a gorgeous day with the windows down driving around town. I love it.