From what I remember from my crappy car days, an air leak is more apparent at idle, and gets less noticeable with RPM. I would suspect a throttle body sync might be in order, and maybe a clean air filter.
2007 Versys Black, V35 Bags, H&B Bars, Skidmarx Hugger.Fender Ex., Avon Distanzia, Braided Lines, Hella 65W bulbs Arrow Can, DNA Air filter, GIVI tall screen (for winter), PCIII, Baldwin Saddle. **SOLD**
2011 KTM SM-T. Crash bars, E55 Top Box, Fender extender front and rear.