AMG GTR - Did anyone upgrade the turbos
Junior Member
Joined: Feb 2019
Posts: 59
Likes: 26
C63S Coupe
Check out Premier Tuning Group. They have done many AMG GT-R's with a lot of success. They have a lot of parts for straight line speed which they hold various world records with, and they also make a lot of parts for guys who like the road course.
Junior Member
Joined: Jun 2021
Posts: 28
Likes: 26
From: Switzerland
AMG GT R
My car has TTE760 installed (the GTR on the website is my exact car, so it is interesting to see that strange type of dyno setup).
I never drove an unmodified GTR so I cannot compare in terms of responsiveness.
(you'll always lose a little bit on the low end to gain everywhere else)
I am not sure if this is a pro or con, but the OPF was gutted on my car as it caused overheating issues on high speed autobahnn runs.
I guess it is a pro since the car sounds amazing without OPF.
The official mercedes dealer/workshop I get the car serviced is run by a motorsport guy/team, so i do not need to worry as they know the ECU firmware has been flashed, and other modifications.
I never drove an unmodified GTR so I cannot compare in terms of responsiveness.
(you'll always lose a little bit on the low end to gain everywhere else)
I am not sure if this is a pro or con, but the OPF was gutted on my car as it caused overheating issues on high speed autobahnn runs.
I guess it is a pro since the car sounds amazing without OPF.
The official mercedes dealer/workshop I get the car serviced is run by a motorsport guy/team, so i do not need to worry as they know the ECU firmware has been flashed, and other modifications.
Super Member
Joined: Jul 2019
Posts: 679
Likes: 262
AMG GT R Pro
My car has TTE760 installed (the GTR on the website is my exact car, so it is interesting to see that strange type of dyno setup).
I never drove an unmodified GTR so I cannot compare in terms of responsiveness.
(you'll always lose a little bit on the low end to gain everywhere else)
I am not sure if this is a pro or con, but the OPF was gutted on my car as it caused overheating issues on high speed autobahnn runs.
I guess it is a pro since the car sounds amazing without OPF.
The official mercedes dealer/workshop I get the car serviced is run by a motorsport guy/team, so i do not need to worry as they know the ECU firmware has been flashed, and other modifications.
I never drove an unmodified GTR so I cannot compare in terms of responsiveness.
(you'll always lose a little bit on the low end to gain everywhere else)
I am not sure if this is a pro or con, but the OPF was gutted on my car as it caused overheating issues on high speed autobahnn runs.
I guess it is a pro since the car sounds amazing without OPF.
The official mercedes dealer/workshop I get the car serviced is run by a motorsport guy/team, so i do not need to worry as they know the ECU firmware has been flashed, and other modifications.
Junior Member
Joined: Jun 2021
Posts: 28
Likes: 26
From: Switzerland
AMG GT R
Depends on your jurisidiction. For my area, replacing the exhaust with aftermarket is "worse" than gutting it, as they cannot inspect the internals of the exhaust.
If replacing is OK, and you want peace of mind, consider higher flow primary/secondary cats, too.
Yes. Much more louder.
If replacing is OK, and you want peace of mind, consider higher flow primary/secondary cats, too.
Yes. Much more louder.
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Super Member
Joined: Jul 2019
Posts: 679
Likes: 262
AMG GT R Pro
Depends on your jurisidiction. For my area, replacing the exhaust with aftermarket is "worse" than gutting it, as they cannot inspect the internals of the exhaust.
If replacing is OK, and you want peace of mind, consider higher flow primary/secondary cats, too.
Yes. Much more louder.
If replacing is OK, and you want peace of mind, consider higher flow primary/secondary cats, too.
Yes. Much more louder.
I haven't done much research on exhaust at all.
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Junior Member
Joined: Jun 2021
Posts: 28
Likes: 26
From: Switzerland
AMG GT R
The place that did the modifications & tune, mentioned the stock manifolds is "limited" in terms of exhaust flow / too-much-backpressure, so if I want more power (it already has enough power for me to handle), the manifolds needs to be upgraded if I want ~850 hp @ "calculated at crank". But of course, where you get that power is at the end of the rev range, where maximum flow also happens.
But I also understand the gearbox is at its design limit aswell...
Higher-flow aftermarket cats are available for the following reasons (you should justify it in the following order):
So in summary, with high-flow turbos, you may experience engine overheating if you retain the stock primary/secondary cats / particulate filters, based on what my car's previous owner experience but he mainly noticed it during highspeed autobahn drives.
Objectively or subjectively, if you feel none of the above is a relevant benefit, then upgrading the cat(s) should not be done until you experience the issue(s) (engine overheating, and/or exhaust is not loud enough). Just as my car's previous owner did - got high-flowed turbos, and only then experienced overheating issues, and then solved it in one way.
Hope that helps.
But I also understand the gearbox is at its design limit aswell...
Higher-flow aftermarket cats are available for the following reasons (you should justify it in the following order):
- primary benefit: not causing the engine to overheat due to less backpressure.
- secondary benefit: allows more power to be made.
- tertiary benefit: (slightly) louder exhaust (depending on the combination)
So in summary, with high-flow turbos, you may experience engine overheating if you retain the stock primary/secondary cats / particulate filters, based on what my car's previous owner experience but he mainly noticed it during highspeed autobahn drives.
Objectively or subjectively, if you feel none of the above is a relevant benefit, then upgrading the cat(s) should not be done until you experience the issue(s) (engine overheating, and/or exhaust is not loud enough). Just as my car's previous owner did - got high-flowed turbos, and only then experienced overheating issues, and then solved it in one way.
Hope that helps.
Super Member
Joined: Jul 2019
Posts: 679
Likes: 262
AMG GT R Pro
The place that did the modifications & tune, mentioned the stock manifolds is "limited" in terms of exhaust flow / too-much-backpressure, so if I want more power (it already has enough power for me to handle), the manifolds needs to be upgraded if I want ~850 hp @ "calculated at crank". But of course, where you get that power is at the end of the rev range, where maximum flow also happens.
But I also understand the gearbox is at its design limit aswell...
Higher-flow aftermarket cats are available for the following reasons (you should justify it in the following order):
So in summary, with high-flow turbos, you may experience engine overheating if you retain the stock primary/secondary cats / particulate filters, based on what my car's previous owner experience but he mainly noticed it during highspeed autobahn drives.
Objectively or subjectively, if you feel none of the above is a relevant benefit, then upgrading the cat(s) should not be done until you experience the issue(s) (engine overheating, and/or exhaust is not loud enough). Just as my car's previous owner did - got high-flowed turbos, and only then experienced overheating issues, and then solved it in one way.
Hope that helps.
But I also understand the gearbox is at its design limit aswell...
Higher-flow aftermarket cats are available for the following reasons (you should justify it in the following order):
- primary benefit: not causing the engine to overheat due to less backpressure.
- secondary benefit: allows more power to be made.
- tertiary benefit: (slightly) louder exhaust (depending on the combination)
So in summary, with high-flow turbos, you may experience engine overheating if you retain the stock primary/secondary cats / particulate filters, based on what my car's previous owner experience but he mainly noticed it during highspeed autobahn drives.
Objectively or subjectively, if you feel none of the above is a relevant benefit, then upgrading the cat(s) should not be done until you experience the issue(s) (engine overheating, and/or exhaust is not loud enough). Just as my car's previous owner did - got high-flowed turbos, and only then experienced overheating issues, and then solved it in one way.
Hope that helps.
