I've got 11k miles on my 08 GSR and I started hearing this weird sound. It happens only when I'm shifting from 1st to 2nd under hard acceleration. More specifically, when I'm giving gas and releasing clutch after shift and only lasts as long as the gas/clutch transfer. The sound seems to be coming from the right rear of the vehicle near the wheel; it's louder with the windows open. It kinda sounds like a default fart or like when you drive over those highway ridges on the shoulder to wake up sleeping drivers. Car is barely modded (AP with intake). Inspection of the wheel well revealed nothing. Thanx in advance.

 

I trying to think of what a default fart sounds like..... sorry im no help here, maybe a soundclip?

 

I hate to make ya worry about it but my car made the same sound and my clutch died a week later.