Engine dies after full throttle

[prj]

On every single car, where the owner has come to me with the problem of the engine stalling at junctions/when letting off the gas was because of large vacuum/boost leaks.

Putting the MAF on pressure side, just means, you are putting it after the leak. You are not fixing the leak, which means that somewhere air exits/enters the system, that does not go through the air filter.
Do you not see how this is bad?

It's your car, and I am not anyone to tell you what to do with it, but I just state, that I disagree with the way you "solved" it.

[Benquattro]

Ok, small update.
The maf on the pressure side --> maf plastic cap explodes from pressure.

So I put the maf back in it's original place, but the engine runs perfect, without idle problems.
So I was thinking what I changed other than the maf. It was the fuel pressure, I lowered it a bit.
I have a cheap ebay FPR, maybe this was the problem all along?

[EspenW]

So I was thinking what I changed other than the maf. It was the fuel pressure, I lowered it a bit.
I have a cheap ebay FPR, maybe this was the problem all along?

Mine will also stall easier at high fuel pressure. How much base pressure do you run?

[Benquattro]

the meter says 4bar.
I'm running a chipset for RS2 spec on a 3B

[prj]

I have a cheap ebay FPR, maybe this was the problem all along?

Duh...

If you need ~4 Bar fuel pressure, just use 7A FPR, which is 4.2 Bar (wrote AAN initially, but then read you were on 3B).
I have very bad experience with all the adjustable FPR's I have seen, they screw up pressure randomly...

[Benquattro]

Duh...

If you need ~4 Bar fuel pressure, just use 7A FPR, which is 4.2 Bar (wrote AAN initially, but then read you were on 3B).
I have very bad experience with all the adjustable FPR's I have seen, they screw up pressure randomly...

Hmm, but the FPR was set on 4.2bar en then the engine stalled, I lowered it to 4 bar en it runs nice.
Only thing is, like you sayd, the pressure does not stay steady.
When the engine is hot or at a later time, the pressure is lower or higher then I had set it.
Maybe I'll look for a 7A FPR.
Thanks

[prj]

Yeah, I think it is not that it is bad at 4.2 bar, but that the pressure is unsteady.
7A FPR is plug and play instead of 3B.

[Benquattro]

Also I found a strange boostleak, since we put the pressure in front of the turbo.

Don't know if this is normal, but at 2 bar the compressor housing begins to leak air.
Can I just put some silicon in between?

[UrS4boy]

Also I found a strange boostleak, since we put the pressure in front of the turbo. Don't know if this is normal, but at 2 bar the compressor housing begins to leak air. Can I just put some silicon in between?

It is NOT a good idea to pressure test with much more than 1 Bar. By 2 Bar you are asking to blow the turbo seals, which you might have done.

[Benquattro]

pff

[Benquattro]

So a k27 housing is not able to withstand 2bar? Doesn't sound logical.