Hello Everyone
I was just wondering whether the more technical minded amongst you could answer this question of mine - Apologies if it is daft

- I am only a lawyer!
Here goes:
I notice that the W164s, even the base model ML350, has twin exhaust pipes.
The older W163s don't have the same feature on the base model (ML320).
Infact only the W163 ML55 has twin exhaust pipes -The ML430 & ML500, both V8s, donot.
Question is: Are twin exhaust pipes an aesthetic addition to the W164 ML350 or do they actually serve a technical purpose?
I look forward to your responses!