I bought my 2017 3LT used and it has Flowmaster non NPP exhaust. I don't no if it initially came with NPP. so how can I determine if it did or it didn't? The sticker doesn't indicate NPP, but I'm not sure how NPP would be noted. The Driver Information Center does have all the settings and selections for Engine Sound Management, in addition to the console knob selector. Thanks for any assistance you can give.