Exhaust Question
Thread Starter
Member
Joined: Sep 2011
Posts: 218
Likes: 0
C63s now in the garage. Sold-GLA45 AMG Edition 1, Sold-2010 Mercedes C63
Exhaust Question
Sometimes when I start from a stand still my exhaust has this amazing deep tone that continues for a few minutes. Then it returns to the normal slightly higher tone that doesn't sound as good. Anyone else have this happen or know whats going on? I want that deeper sound all the time, actually sounds like an AMG when it does this.
Banned
Joined: Aug 2009
Posts: 8
Likes: 0
ml320cdi
MBWorld Fanatic!
Joined: Jun 2015
Posts: 2,296
Likes: 1,481
23 S580 Executive
Its a common startup mode with performance cars, the purpose is to get the cats to light off quicker for emissions purposes. The car reverts to normal fueling/timing based on either a set time or the O2 sensor readings depending on the car.
Newbie
Joined: Jul 2015
Posts: 9
Likes: 0
From: Montreal, Quebec
2015 GLK 250 BlueTEC
I don't think he's referring to a cold start. This happens when I come off of a red light or a stop sign, the exhaust note gets noticeably deeper for a little bit. I have no clue what made it happen but it sounds way better.
Trending Topics
MBWorld Fanatic!
Joined: Jun 2015
Posts: 2,296
Likes: 1,481
23 S580 Executive
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Newbie
Joined: Jul 2015
Posts: 13
Likes: 0
2015 GLA 45 AMG
Sometimes when I start from a stand still my exhaust has this amazing deep tone that continues for a few minutes. Then it returns to the normal slightly higher tone that doesn't sound as good. Anyone else have this happen or know whats going on? I want that deeper sound all the time, actually sounds like an AMG when it does this.
On mine, it seems to work this way. This car is the most peculiar ride I have ever owned, with the starting and stopping, the exhaust notes, etc. The car is like a chameleon in that it switches in and out from being a high-end sports car to a placid crossover. Frankly, at my age it having that ability is great for me.
