Relatively easy to install - just take your time and use a little spray silicone to help with the removal of some of the parts from your stock intake assembly. The fit and finish of the K&N intake is very good - it was easy to connect and just took a few minor adjustments to get it just right. Noticeable improvement in throttle response and general acceleration characteristics - more power across the RPM band. Also seems to improve my MPG by about 5%. Another great K&N product.