[8)]I have the Mopar/Borla factory duals for 2 1/2 years on my NA Touring PT.I also have an Airaid filter.I had my muffler shop add a resonaotor (which also is stainless) where the straight pipe was) I thought without it that it was too loud on the highway & also idling. Now its fine. As far as performance I think the combination gives the PT a nice look & gets rid of the slight drag or lack of pep in normal driving. It just evens things out. It certaining isnt the turbo but its just fine now considering mines an automatic.I hope this helps,[^]MJB
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