Joe, I had a generation 1 PowerVault catback exhaust and then switched to a Custom exhaust with 2.5 Stainless Steel pipes all mandrel bent and tig welded into Magnaflow cats into a Single 3” in Dual out MagnaFlow XL Muffler with dual 4" resonated tips.

JHarris1385, Gas mileage sucks. I get about 200 miles on a tank full... then again I drive pretty fast all the time.