Nice! Pretty much the same setup here, with Flowmaster 40 Race mufflers out back ... straight piped the resonator. Then combine the H&R Springs with running Traction Control off for a more balanced rear torque split, it feels very nice and much improved.
Torque steer, squat, dive, all gone. Oh, K&N filter and Cold Air Intake as well. But lately, I've been thinking about going to Steeda in Pompano Beach for some tuning next.
I mean, it's no AMG E63, but it ain't as bad as people make it sound regarding handling ... I say attributed to the more compact-sized 112.9" wheelbase. Take it from someone that has a 2009 C63 AMG that has tried to delete me several times. (What? Operator error? You be quiet. Maybe I just like hanging out in ditches.)
Enjoy the ride, brother! About to take mine out for a spin momentarily. Run that EcoBeast hard.