In a few weeks I'm going to get a tune for my 2014 Nissan Maxima I was wondering do I need to mess with my cats to get the pops and flames ? I already have a custom y pipe I'm just confused on do I need to mess with my factory headers to get the pops and flames with my tune? Like straight pipe the cats or could I leave it along and still get the pops and flames from the map on the tune ? I already have the motordyne full catback and K&n airintake and custom y pipe from jemini which is Adam