If your serious about tuning your ride I highly recommend you purchase AEMs CAI.. Great sound, appearance and performance. I haven't had it installed long enough to tell if I'm getting better mpg, but there is a noticeable hp increase right from install, and I suspect an increase in mpg once I get a few tanks through. I did the install myself and it was not to bad. The hard part was removing the factory air box. Total install took about 3 hours(2.5 of that was removing factory air box).