i had a flowmaster super 40 on mine all i can say is loooooud and i like loud but it had a horrible highway drone that i hated. after getting a citation for noise disturbance from my neighborhood assoication i ordered my magnaflow its awesome and everyone loves it with the dual mufflers and fully polished s.s. it looks great sounds great and is ready for the true dual upgradewith just a lil cutrting and welding. oh and with the small v6 you wont get that nice flowmaster pop on down shift... its v8 exhaust purely a v8 exhaust i have a super 44 which is the 40 made out of diamond plate and is mild steel just like the 40 on my 07 chevy siverado v8 it sounds great like an old nova or something, the flowmaster just didnt sound right on the benz motor imo