I've got the TSRM with no resonator. I have not had any problems with the cops. You shouldn't have problems as long as you are not being obnoxious with it. I recommend TRD
, TSRM, or thermal. No one seems to have thermal. I wish I went with Thermal instead of Tanabe. Thermal is known for their exhausts, you know that you are getting your moneys worth. But it will be louder than TRD
is about the same as TSRM performance wise, but not as loud.