I'm running stock exhaust up to the point of the mufflers. The stock axleback mufflers where switched to Series 4400 Flow Masters with Magna Flow tips.......sounds really nice. A deep mellow sound while parked and on acceleration. A little drone but not bad at all.
2008 G8 V6: Eibach lowering springs, 18" staggered rims, K&N CAI, Series 4400 Flow Master axle backs with FlowMaster tips, radiator cover, tinted tails, silhouette of G8 third brake light.