downpiping gtr exhaust

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Old Jun 26, 2020 | 09:13 PM
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downpiping gtr exhaust

if i just got my 2020 amg gtr today brand new, should i take it to mechanics to downpipe and change the whole exhaus/cat system and tune it right away? i dont care about horsepower, only loves it when it have more crackles while down shifting or reving. and sound louder. or should i wait for like 5000 km and then do all those kind of ****.

Last edited by ihatecodmw; Jun 27, 2020 at 10:17 AM.
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Old Jun 26, 2020 | 10:48 PM
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amg gts
Just remove secondary cats right away and you will love it
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Old Jun 27, 2020 | 01:26 AM
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You dont need to wait...

unless you want to enjoy it at current power level and then upgrade when you get bored with the car.

Downpipe and exhaust wont give you much hp but the turbos will spool quicker.
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Old Jun 27, 2020 | 07:28 AM
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amg gtc 2020 bk
Originally Posted by ihatecodmw
if i just got my amg gtr today brand new, should i take it to mechanics to downpipe and change the whole exhaus/cat system and tune it right away? or should i wait for like 5000 km and then do all those kind of ****.

what year is your gtr ?
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Old Jun 27, 2020 | 10:17 AM
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Originally Posted by mbjj57
what year is your gtr ?
year 2020
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Old Jun 27, 2020 | 10:20 AM
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Originally Posted by kumizi
You dont need to wait...

unless you want to enjoy it at current power level and then upgrade when you get bored with the car.

Downpipe and exhaust wont give you much hp but the turbos will spool quicker.
ahh ok, actually my intention was to increase the crackles and loudness of the exhaust, due to all 2020 versions are muted and barley can hear those crackles anymore. horsepower wise. i dont care because in my area there is a lot of cops. so i dont have the guts to speed XD
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Old Jun 27, 2020 | 09:02 PM
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Originally Posted by kumizi
You dont need to wait...

unless you want to enjoy it at current power level and then upgrade when you get bored with the car.

Downpipe and exhaust wont give you much hp but the turbos will spool quicker.
much of a change in turbo spool improvements with just the secondary cat removal? Hoping to avoid deleting the primaries.
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Old Jun 27, 2020 | 09:12 PM
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Originally Posted by Skilly
much of a change in turbo spool improvements with just the secondary cat removal? Hoping to avoid deleting the primaries.
I went straight to catless so I can't say.

Removing any exhaust restriction helps. But the primary OEM cats are probably still ~700 cell cats. Deleting secondary and putting 200 cell race cats in the primary would probably make a difference.

I'm with ya. I just bought catted downpipes for my other car. Every year I have to chase down my inspection guy and pester him to get my GTS to pass.
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Old Jul 2, 2020 | 11:15 PM
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Originally Posted by ihatecodmw
ahh ok, actually my intention was to increase the crackles and loudness of the exhaust, due to all 2020 versions are muted and barley can hear those crackles anymore. horsepower wise. i dont care because in my area there is a lot of cops. so i dont have the guts to speed XD
I just had the secondaries removed on my 2018...it makes a significant improvement in all of the areas that you are looking to gain. I didnt have enough time to play and test if it had improvements around turbo lag. It was a LOT of fun messing with downshifting around overpasses tho.
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