Official exhaust software upgrade
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Mine was build July 2016... I'm quite close with the boys at my dealership (Mosman) so when I told them my exhaust seemed quieter than before they looked after it.
As you just had the diff oil change I have a feeling your car is a 2017?
The dealer is slightly correct. If you looked up one of the other codes there'd be no record of it... but if he changed the first two letters to our region it would come up
Mine was build July 2016... I'm quite close with the boys at my dealership (Mosman) so when I told them my exhaust seemed quieter than before they looked after it.
As you just had the diff oil change I have a feeling your car is a 2017?
My car went in for its B service as well as some campaign bulletins that were for my VIN (coil packs and something about the firewall?!?), anyway... I asked them to also do this update while it was in - and HOLY CRAP what a difference a software update makes!!
The exhaust is much louder and has a bunch of pops and crackles on lift off that it didn't have before.
Thanks for all the info - probably the best "free" upgrade I've ever made to a car
Needless to say I took the long way home from the dealership.








Last edited by michael640D; Aug 9, 2017 at 07:35 AM.
Trim you were spot on mate.
I picked my car this afternoon, and YES the engine and transmission software needed updating, and so it was done.
I now get multiple crackles on lift off. It used to be just the one.
Throttle response in S+ is now more controlled.
Exhaust sound in S+ is deeper with more crackles.
Only downside now for me is in comfort with performance exhaust on:
The car sounds quieter. It used to rumble and sound deeper before the update.
I suppose what it means is the parameters between comfort and sport+ are now wider apart.
3rd to 4th gear changes now seamless.
Interesting thing, I just got a call as I was typing this from AMG, following up on my complaint.
Thank you all once again.
Late reply but glad you got the update through Uga.
Yes I too noticed that the exhaust in comfort mode is now quieter
In fact i've noticed that in the lower rev range (below 1.5 - 2k the exhaust is noticeably quieter even with the flaps open and also when braking or using the HOLD function the exhaust note also quietens, even in Sport+ for me at least.
It's annoying because one of the best things for me pre-update was the rumble at standstill and low revs with the exhaust on in any driving mode which whilst still there, just doesn't have the same depth to it as before.
A shame that this had to be the tradeoff for a livelier exhaust and smoother transmission when opening up the revs in Sport+. Hopefully AMG takes note and comes up with a solution.










