everytime I brake or going over some bumpy roads there are these cracking noise which I found under the driver's front side near the wheel..
is it the control arm or suspension?

I would like to take it to the dealership since I still have my warranty but will I get shxt if they see I got swap out my cats when they jack my car up?
please let me know asap... thanks

 

i have this same problem. if you go to the dealer, please let us know what happens as others may have the issue as well

edit - i have an 04.5 g35c..

 

Pop your cats back on when you go to the dealership and then swap them back out when you leave, . Mine makes that same sort of popping noise when you turn the steering wheel. I don't know what it is though.