Hi guys, new to the forum here.
​​​​​​Looking to to buy a 2012/3 e63 5.5 bi turbo, planning to do stage 2 mods and some exhaust mods. I've been looking at videos and not many of these engines can burble or pop and bang. Can someone confirm if its possible or if its not possible with these engines, are they the m157 engine 525bhp RWD

 

They can be tuned to pop and burble. I heard a CLS63 with an OE tune that included the pop and burble and it sounded BA.

 

I asked the dealership about putting the overrun file on and they had no idea what I was referring to.
Is there a formal way to word it or request this feature be added? My previous vehicle had it and miss the snap, crackle and pop.

 

I'm still waiting for renntech to get back to me and let me know if they can add it to my tune. As far as I know its called a "pop and burble" tune.

 

I think I have seen that, was the car on here white one and burble tune done in New York? Sounded ace but that's the only 5.5 bi turbo I've seen with decent burble tune.

 

I actually heard it in person and sounded really good. Contact OE tuning if you really want it.