RS2 Factory Boost pressure

[prj]

Sotck RS2 Motronic gives a 1.4 bar (real not absolute) boost just on overboost.

There is no overboost on RS2. Only on S2.

[Golfboy666GTI]

Great, thanks for that, Ive been wondering where boost sits throughout the rev range.

[UrS4boy]

There is no overboost on RS2. Only on S2.

So none of this (from AAN info) (Note: Here boost is absolute not relative):

[prj]

So none of this (from AAN info) (Note: Here boost is absolute not relative):

All the functionality is there in the RS2, but it's not used.
Overboost and normal boost target are exactly the same values.

[wowow]

So stock RS2 has overboost to 2 bar and then taper off to 1.5 bar?

[prj]

So stock RS2 has overboost to 2 bar and then taper off to 1.5 bar?

No. This is for S2/S4 and is absolute pressure.
1 bar and 0.5 bar boost.

RS2 is 1.4...0.9

[veneto rs2]

There is no overboost on RS2. Only on S2.

All the functionality is there in the RS2, but it's not used.
Overboost and normal boost target are exactly the same values.

You just killed one of myths.....
Can you explained me the fact that the functionality it's there but no used, means that could be easily put back to work on the S2/S4 principle?
just curiousity and desire to know.
Thanks Prj!

Stefano

[prj]

You just killed one of myths.....
Can you explained me the fact that the functionality it's there but no used, means that could be easily put back to work on the S2/S4 principle?
just curiousity and desire to know.
Thanks Prj!

Stefano

Yes, it can be enabled if so desired.
I almost never use it. Only for cars that need to go flat out on the autobahn - there I enable the "overboost" mode at 6500+ rpm and reduce boost after the overboost time passes so the engine does not get cooked.

[wowow]

I found split hoses again. Need to replace both hoses connected to the valve but cannot find anyone offering them online. Is these any one making aftermarket hoses ?

[wowow]

Guys, pls correct me if I am wrong :

On a healthy car, what I should see in my boost gauge, when flooring on 3rd at 3k rpm, is 1.4bar and then tapper off to 0.9bar. How long does this overboost of 1.4bar last ? Or does it last until a certain rpm is reached ?

[veneto rs2]

Yes, it can be enabled if so desired.
I almost never use it. Only for cars that need to go flat out on the autobahn - there I enable the "overboost" mode at 6500+ rpm and reduce boost after the overboost time passes so the engine does not get cooked.

Thanks prj!

Stefano

[veneto rs2]

Guys, pls correct me if I am wrong :

On a healthy car, what I should see in my boost gauge, when flooring on 3rd at 3k rpm, is 1.4bar and then tapper off to 0.9bar. How long does this overboost of 1.4bar last ? Or does it last until a certain rpm is reached ?

Prj just stated that there's no overboost on RS2
I was wrong and he's (i'm an amateur He's an expert)right

Stefano

[A80Avant]

I always thought that a steady boost was the one that is reached at whichever rpm and stays as is till the end of the rev range. Hence in this case 1.4 till red line. If however it drops then I'd regard it as overboost of 1.4 and steady of 0.9

That's what I thought at least

[prj]

I always thought that a steady boost was the one that is reached at whichever rpm and stays as is till the end of the rev range. Hence in this case 1.4 till red line. If however it drops then I'd regard it as overboost of 1.4 and steady of 0.9

That's what I thought at least

Overboost is a specific operation condition where the standard charge pressure is increased for quicker overtaking based on a set of criteria.
These criteria include IAT and some timers among others.

1.4 ... 0.9 is just the boost profile on the car. 1.4 taper 0.9.

[A80Avant]

Ah ok.