do our cars kinda growl say past 4500 RPMs...or do i have an exhaust leak?

[yeti]

I was driving the other day and had to raise the rpms and the cars started to growl
It didn't sound bad just wondering if that's normal

 

[SouthCaliVR4]

Do you still have A/C in the car? Working or not. if you do check the a/c line that runs from the drivers side along the firewall. look to see if it's contacting anywhere along it's run. if it is cut a piece of fuel line & wrap the pipe at each contact point.

The o.e. clips break & let the line rattle under higher rpm's.

 

[yeti]

Thanks ill look them over