Ok so here is the story. I was dropping off my girlfriend( we were parked in the parking lot with car on and ac on) and all of a sudden we noticed a noise. We looked around and she was like is that coming from your car. I had just moved my steering wheel, and I noticed that my exhaust noise changed. I kept turning my steering wheel and the exhaust would get louder when I turned the steering wheel. I have an OBX catback, I went outside I told my girl to change the steering wheel and the exhaust not got louder, I was like wtf. Well does anybody know what this could be, I have never noticed it before.

 

It's normal. It just takes power to turn the steering wheel, so the revvs shoot up a tiny bit.