I was told the tune is current to 2009, but the tuner is from 2006ish. I am running anywhere from 1800 - 2400 rpms. The noise doesn't vary with engine speed, mainly just car speed at 50mph+. I can run 4th gear up to 50mph+ and the sound is not there...Hell I had 4th to 104mph Saturday at the track and no noise. Just in 5th.