Max boost

[richw911]

What is the most amount of safe boost that should be requested on a MK4 TDI 130/ 150 Remap?

Same for a 1.8T AGU?

Out of curiosity

[RTechUK]

What is the most amount of safe boost that should be requested on a MK4 TDI 130/ 150 Remap?

Same for a 1.8T AGU?

Out of curiosity

There are a lot of other factors to take into account when talking safe boost, EMPs EGTs, Knock control, lambda ect..

Safe held gains upto around 4000rpm on a  VNT 17 A / B would be around 4 / 4.5psi

A stock 130PD request is 1.32bar with 1.55bar over shoot, Most stock 130PDs will see upto 1.7bar spikes due to sooted up VNT control.   At a remapped 130pd can see a 1.63bar request, then if you can reduce the EMPs & EGTs with a turbo back exhaust then you can run more boost in the inital spike in the midrange.  Limiting factor with boost and VNT17 is mileage the window around 110-130k is where the start to fail stock or tuned, and the customer who thrashes the car for cold.  but saying that I have a few stage2 115pd 130pds 150pds 160pd which still going strong with over 180k and a 130pd passat taxi mapped with 325k.   150PD mapped will run a request line around 1.75bar from 1.5bar (again even in the stock map it can see 1.9bar). and the 160pd 1.55bar. Then the 150PD hybrids run 2bar across the whole band.


K03 stage2 can (if the actuator is upto it) peak 1.5bar and taper down to 1bar as it wont hold the boost due to the turbos volumetric efficiency.  A K03 will run flat out 200bhp with the actuator shut solid and be happy for many many year.

 I am running 21psi to the 7500rpm on my AUM from my own built hybrid turbo, and a customer with an AGU is running a T3-04e at 27psi and our astra 2bar at 8000rpm 500bhp

But boost is a factor of the rest of the tuning, you cannot run high boost with a lean fuel strategy.


To get a picture of what boost everyone is running on there map just search google for vagcom logs.

 

[The Doc]

What is the most amount of safe boost that should be requested on a MK4 TDI 130/ 150 Remap?

Same for a 1.8T AGU?

Out of curiosity

There are a lot of other factors to take into account when talking safe boost, EMPs EGTs, Knock control, lambda ect..

Safe held gains upto around 4000rpm on a  VNT 17 A / B would be around 4 / 4.5psi

A stock 130PD request is 1.32bar with 1.55bar over shoot, Most stock 130PDs will see upto 1.7bar spikes due to sooted up VNT control.   At a remapped 130pd can see a 1.63bar request, then if you can reduce the EMPs & EGTs with a turbo back exhaust then you can run more boost in the inital spike in the midrange.  Limiting factor with boost and VNT17 is mileage the window around 110-130k is where the start to fail stock or tuned, and the customer who thrashes the car for cold.  but saying that I have a few stage2 115pd 130pds 150pds 160pd which still going strong with over 180k and a 130pd passat taxi mapped with 325k.   150PD mapped will run a request line around 1.75bar from 1.5bar (again even in the stock map it can see 1.9bar). and the 160pd 1.55bar. Then the 150PD hybrids run 2bar across the whole band.


K03 stage2 can (if the actuator is upto it) peak 1.5bar and taper down to 1bar as it wont hold the boost due to the turbos volumetric efficiency.  A K03 will run flat out 200bhp with the actuator shut solid and be happy for many many year.

 I am running 21psi to the 7500rpm on my AUM from my own built hybrid turbo, and a customer with an AGU is running a T3-04e at 27psi and our astra 2bar at 8000rpm 500bhp

But boost is a factor of the rest of the tuning, you cannot run high boost with a lean fuel strategy.


To get a picture of what boost everyone is running on there map just search google for vagcom logs.

 

Rich, is that for a standard or a modified car, if modified what modifications are you looking at?

Regards
Craig

[richw911]

What is the most amount of safe boost that should be requested on a MK4 TDI 130/ 150 Remap?

Same for a 1.8T AGU?

Out of curiosity

There are a lot of other factors to take into account when talking safe boost, EMPs EGTs, Knock control, lambda ect..

Safe held gains upto around 4000rpm on a  VNT 17 A / B would be around 4 / 4.5psi

A stock 130PD request is 1.32bar with 1.55bar over shoot, Most stock 130PDs will see upto 1.7bar spikes due to sooted up VNT control.   At a remapped 130pd can see a 1.63bar request, then if you can reduce the EMPs & EGTs with a turbo back exhaust then you can run more boost in the inital spike in the midrange.  Limiting factor with boost and VNT17 is mileage the window around 110-130k is where the start to fail stock or tuned, and the customer who thrashes the car for cold.  but saying that I have a few stage2 115pd 130pds 150pds 160pd which still going strong with over 180k and a 130pd passat taxi mapped with 325k.   150PD mapped will run a request line around 1.75bar from 1.5bar (again even in the stock map it can see 1.9bar). and the 160pd 1.55bar. Then the 150PD hybrids run 2bar across the whole band.


K03 stage2 can (if the actuator is upto it) peak 1.5bar and taper down to 1bar as it wont hold the boost due to the turbos volumetric efficiency.  A K03 will run flat out 200bhp with the actuator shut solid and be happy for many many year.

 I am running 21psi to the 7500rpm on my AUM from my own built hybrid turbo, and a customer with an AGU is running a T3-04e at 27psi and our astra 2bar at 8000rpm 500bhp

But boost is a factor of the rest of the tuning, you cannot run high boost with a lean fuel strategy.


To get a picture of what boost everyone is running on there map just search google for vagcom logs.

 

Thanks for the info 

[richw911]

@ Doc my AGU has full TB exhaust inc sports cat forge 007p dsg intake 

[The Doc]

@ Doc my AGU has full TB exhaust inc sports cat forge 007p dsg intake 

And what about the diesel?

[richw911]

@ Doc my AGU has full TB exhaust inc sports cat forge 007p dsg intake 

And what about the diesel?

Decat ss exhaust and dsg intake 

[RTechUK]

@ Doc my AGU has full TB exhaust inc sports cat forge 007p dsg intake 

And what about the diesel?

Decat ss exhaust and dsg intake 

What is the power aim? Boost is a direct reflection of power output, and depending on the fuel smoke map (lambda) for every 100mb of boost will equal around 8 - 12bhp more power at that given rpm point.  So if the power aim is 180bhp then around 1.6bar at the top end would be needed, 170bhp = 1.5bar ect.. This ratio can be over come by making the lambda richer to give more smoke and poke.
It's really down to the tuner, some run clouds of black smoke and lower boost, some run cleaner by adding more air flow.

[The Doc]

@ Doc my AGU has full TB exhaust inc sports cat forge 007p dsg intake 

And what about the diesel?

Decat ss exhaust and dsg intake 

What is the power aim? Boost is a direct reflection of power output, and depending on the fuel smoke map (lambda) for every 100mb of boost will equal around 8 - 12bhp more power at that given rpm point.  So if the power aim is 180bhp then around 1.6bar at the top end would be needed, 170bhp = 1.5bar ect.. This ratio can be over come by making the lambda richer to give more smoke and poke.
It's really down to the tuner, some run clouds of black smoke and lower boost, some run cleaner by adding more air flow.

Ok, are we to assume that both cars are running well and have no obvious issues and are mapping a standard car that has recently had a service or are we "boosting blind"?

After all you must have a safe car with a pre and post logging session for example on the 1.8t of lambda, fuel trims, ignition and boost or you may experience problems.

The TDI's going to leak boost full stop or are we assuming it's been leak tested using CARBONS "boost leak test kit"?

Sorry for all of the questions but I'd like to give you the correct answer 

[richw911]

@ Doc my AGU has full TB exhaust inc sports cat forge 007p dsg intake 

And what about the diesel?

Decat ss exhaust and dsg intake 

What is the power aim? Boost is a direct reflection of power output, and depending on the fuel smoke map (lambda) for every 100mb of boost will equal around 8 - 12bhp more power at that given rpm point.  So if the power aim is 180bhp then around 1.6bar at the top end would be needed, 170bhp = 1.5bar ect.. This ratio can be over come by making the lambda richer to give more smoke and poke.
It's really down to the tuner, some run clouds of black smoke and lower boost, some run cleaner by adding more air flow.

Ok, are we to assume that both cars are running well and have no obvious issues and are mapping a standard car that has recently had a service or are we "boosting blind"?

After all you must have a safe car with a pre and post logging session for example on the 1.8t of lambda, fuel trims, ignition and boost or you may experience problems.

The TDI's going to leak boost full stop or are we assuming it's been leak tested using CARBONS "boost leak test kit"?

Sorry for all of the questions but I'd like to give you the correct answer 

This

Tell me more about CARBONS "boost leak test kit"