mbamggt

hi, I've just witness a 2019 amg gt 4 door 63s versus 2020 amg gt 4 door 63s, in my opinion 2019 sounds better and louder on rev, idle, cold start and while driving as well, a lot of crackles too. but the 2020 version sound muted, reving is limited to 4000 and cold start sounded muted as well. not sure if changing the capristo exhaust would help solve the problem for the crackles. maybe its the ecu problem , maybe changing exhaust would only make it louder. or simply I heard wrong. ok

so here is the real question,

2019 AMG GTR sounds ok not that bad. I am just wondering if anyone has witness a 2020 AMG GTR Coupe, does it sound worse that 2019 amg gtr coupe, rev at 4000 rpm, and fart less crackles? and I don't think there is capristo exhaust for amg gtr.

does anyone knows that if stock exhaust 2020 amg gtr PRO sounds louder than the 2020 amg gtr coupe? or more crackles? rev more than 4000 rpms?

its so annoying that these information aren't given by dealers or amg lol XD

benzbell

Paging ronin amg.

wizee

Do North American 2020 models have particulate filters?

canucklehead

2020 GTR is quieter than 2018, IMO.
While not as loud, the 2020 has a better mid-range sound IMO.

NYCSoiL

Drove 2020 GTR on the track for 2 days and was actually expecting it to be more muted than it was. While it is not as loud as 2018-2019 it still sounds good.

550x2

European laws on noise levels have changed this year. All cars are quieter as a result. My 2019 GTC is louder than the 2020 by a good bit. It turns heads in quiet mode and scares people in loud mode. I love it!

mbamggt

so sad, why does that have to affect north America. what good can a car be without noise =D

nextdoorwarren

What is this, some new type of cat?

wizee

Particulate filters are additional filters in the exhaust used to catch particulate matter (little particules of soot). These filters both restrict exhaust flow (slightly worsening power and efficiency) and also further muffle exhaust sound. There is regeneration mechanism to burn off the soot captured in these filters rather than having to replace the filter, but I assume the filters still have a finite life.

Diesel cars and trucks have had these for around a decade now. Gasoline cars have traditionally not needed them since they don’t produce very much soot. Environmental regulators and politicians in Europe have been pushing to lower emissions, and they have a habit of further tightening the screws on small emitters to the point of absurdity, while ignoring some bigger emitters. There are many sources of non-tailpipe particulate emissions, including tire wear, road wear, and brake dust. On current generation gasoline cars, the non-tailpipe particulate emissions actually exceed the tailpipe particulate emissions.

With new tighter emissions rules in Europe, car manufacturers have had to put particulate filters in their gasoline cars to meet European regulations. Fortunately, North American regulations haven’t yet imposed such onerous restrictions, so they’re not needed on North American cars, but European car makers are divided on whether or not they should make the North American cars compliant with European emissions regulations. It seems Porsche has kept the filters in some North American cars (eg. 991.2 Speedster) while omitting it in other North American cars (eg. 992 Carrera S). I don’t know what Mercedes-Benz’s plans are.

Some more “interesting” developments on this topic:

1. Companies have been building brake particulate filters to capture brake dust, and they’re marketing them to European regulators. They look horrible and would interfere with cooling. I hope these atrocities don’t become mandatory, but if they do, carbon ceramic brakes would be a much better solution (for high end cars at least) since they produce much less brake dust than regular brakes while also performing better rather than worse.
2. Tire wear, road wear, and brake wear are all functions of a vehicle’s weight. While brake dust from electric cars is less (due to regenerative braking), the road wear and tire wear particulate emissions from electric cars are higher than equivalent ICE cars due to the higher weight.

mbamggt

basically, what I've got is this while searching around during Christmas time, anything 2019 and before. don't need to worry about revs, and exhaust sound or filter stuff. anything on year 2020 and after will sound muted, lower in revs for north American cars. even though there was nothing stated that for north American European cars will have OPF. and this goes for Porsche, audi, Mercedes. well Porsche always sounded bad gt3, gt3rs, gt2rs slightly better, for the N/A Lamborghini's in my opinion I don't think they will have OPF but who knows since they might not even going to produce any more N/A so my guess is that they will sound muted. and all audi no matter r8, rs all will sound terrible. so probably either straight pipe those or change the exhaust system. =D same for Mercedes, anything 2020 and after sound muted and boring. I've personally went and tested the 2019 & 2020 gt 4 door 63s . there is a significally big difference in sound. hope this treat might help people who purchase 2020 version car in the future. make sure you know some one that can customize or change your exhaust. if you are looking to purchase vehicle to sound insane for year 2020 and after, you probably will be kind of disappointed. world is changing =D maybe its for good , maybe its not.

jn66

How difficult is it to remove the changes made to 2020?

AMGGTS1of38

Mine sounds so good, I had to get vanity plates to commemorate this fact!

And mine is only a GTS

MAU B

I agree
my 2019 had a way better sound. Start up and revs. This 2020 is mute. It’s almost like “the party is over”!!! Can that be changed to the 2019 sound?

Skilly

It seems to all be down to the restricted limits with the valving - an EVM sounds like it changes everything.

MAU B

I called Renntech today and the technician told me that a lot of guys are unhappy with the changes AMG has done to 2020 and 2021 models .. muting the exhaust pipes.
the suggested replacing all downpipes for $4,500 or alternatively get them fully open instead factory 2/3 opening ... that would take 1 hour of labor and cost little over $900 with taxes included. Sounds good to me. He said I’ll get some better sound back just knocking the filters off. I’m game 🤜🏼💥🤛🏼

mbjj57

Are you just getting the EVM installed?

I Have a 2020 gtc and I used to have a 2016 gts.

the gts sounded way better.

I installed the cete module same as the renntech evm.

Now it sounds louder but not as loud as my stock gts. less pops and bangs and not as pronounced as before.
I assume they changed the ecu parameter on the 2020 model...

I am really considering cutting the secondary cat off...

MAU B

Hey
good info .. would you take it somewhere to cut it off or do it yourself? Where are you located? I’m in south Florida.

Surge

I think very difficult, because in addition to particulate filters (worldwide), you have engine software changes.

Skilly

I have a GTC with the CETE module and Secondary delete. It's a BIG change with those two mods. I deleted the secondary first, and it was a minor change compared to the EVM. Something to note about 'pops and bangs' - they don't exist except for in Sport + or Race mode. Not sure of the GTS earlier versions are the same but it's certainly that way on the newer cars.