Juice1979

Hey guys I have a 2012 E550 4matic but I figured I would post this here as the engines are the same. I removed both resonators the other day and replaced with an X-pipe. To my surprise there were no secondary cats. So now the exhaust is just the primary cats and the stock mufflers. The car is still way to quiet, quieter than a stock 63amg. Could it be the Xpipe thats quieting it down? Would it be louder with straight pipe?

I have heard cls550 with the resonators removed and its way louder than mine. Are the mufflers different?

I am looking for ideas on how to make it louder without breaking the bank with a full exhaust like meistercraft etc. I was thinking of maybe swapping in a set of stock 63 mufflers. any ideas are much appreciated, thanks
Erik