So I want to install a crab intake in my 2009 GT but my car is still under the powertrain warranty....my question is will bolting on a crab intake void my warranty? If so could I jus take off the intake and put the stock one on if I need to get something fixed?

the only way an aftermarket part can void a warranty is if they say that the aftermarket part led to the failure. and yes you can put your stock on if you need to get something repaired.

+1