I just put in the MMR Intake. I was really impressed. No tuning needed even tough you won't get the maximum performance. You can feel and hear it at around 4000-5500 RPM. I knew befor installation that it would cuase the check engine light to turn on because of the computer not recongizing the change. I was told the computer would reconginze it after 200 miles and then turn off. I have drivin about 300 miles so far and its still on. I checked the sensors and everything looks fine. Anyone having the same problems? Thanks.