I wouldnt do it the resonator was put in for sound have you ever heard a 4 cyl run with open headers? Thats what it will sound like SH*T! No more smooth rumble just loud popping and irritating. hope this helps.
I have AMSS downpipe which is straight pipe after CAT(high flow cat).. it doesn't sounds like shit.. Sounds really mean and like racing car sounds.. But it's loud loud... If you are paranoid about getting pulled over don't do it.
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