Yeah, it's not too bad but I had just bought a tune for the LS I wrecked from Rob, and a tune for this LS from Rob in the past year and a half, and now that it's almost Sept. I don't really want to have to fork out another hundred for something I can only use for a couple more months this year.
I don't believe the car has any issues, I tried it a number of times with tune and without, and I haven't been running the tune for two months now but I have been hot rodding the car and I haven't heard that sound a single time. It's still under warranty for a couple years, believe me when I tell you if I thought there was something wrong with it I would've taken it in. I'm so anal when things go wrong on cars and I notice all the sounds they make, if I think something is up I look into it, know what I'm sayin? I've taken both my LS' to the shop at least a half dozen times now saying something is wrong only to be told everything is fine. So far they were only wrong twice!