Pytanie - czy podczas postoju, na luzie, po wcisnieciu gazu i wkreceniu silnika od 1 do 6 tys obrotow wskazowka cisnienia powinna zachowywac sie jak podczas normalnej jazdy? Czyli pokazywac najpierw 0.4, a po zalaczeniu sie turbo skoczyc do 1.8? Czy na luzie turbo zachowuje sie inaczej?

powinna zachowywać się jak podczas jazdy , znaczy ciśnienie powinno wzrosnąć

Ok, dzieki.
To pytanie jeszcze jedno:
W 944 jest wskaznik cisnienia od 0.4 do 2.0
Czy niemieckie 944 pokazuja 0.8 podczas doladowania czy 1.8? Bo z tego co wyczytuje na amerykanskich stronach to pokazuja 1.8... Ale moze w niemieckich bylo to 0.8? Prosze o odpowiedz kogos kto jezdzil takim

Atmosphere (the air we live in and breath) = 1 bar. In fact this atmosphere pressure is what keeps us on the ground preventing us from floating in the air like on the moon.
From -1 bar till 1 bar is vacuum, from 1 bar you start to have boost (more than the atmosphere>
On a good boost gauge you will see that the needle starts from -1 Bar and then goes to 0Bar and from then you have boost.
The original Porsche boost meter is crap and should never be used to read an accurate boost level. It's an "indicater" not a real instrument. You can compare it with the fuel consumption meter in the S2 it's also crap

But the only way that you can check if you have the boost is looking at this meter, so even if it doesn't show correct boost, it shouldn't show below 1 bar when the car has 3000-6000 rpm, right?
Yes, I know, you can always check 0-100 time

Only when you have full throthle, even lifting the throtle with 1 cm will make the boost come down immediatly.
The ONLY way you can messure the accurate boost is to drive the car and connect a good boost meter, you will need 2 meters of vacuum hose, a T piece, a good boost meter and some sticky tape to keep the meter on the dashboard.

Another way (old school) to check the boost is to put a 500 Euro note on the daschboard against the window and tell the passenger that if he can grab it before you hit 100 Km/h he can keep it
With a good 944 Turbo you will not loose your money for sure

IMHO KLR prevents from full boost on idle. There is not enough load on engine to drive full boost. You need to drive the car, press to the floor on at least 3rd to see boost around upper limit. In cars with modified timing valve with no mods in KLR (protection not removed) it is possible to overboost the engine and enter in "save mode" - when KLR's detects overboost. But it only happens on higher gears, when engine is loaded. You cannot overboost on idle.

In factory repair manual, there is a description of test of max boost level. Reading are done using additional meeter (a sender screwed-in into the intake mainfold). It requires to drive the car on 3rd, press brake and accelerator at the same time for a feew second (beware not to burn brakes !), then read the boost level on such heavy load.

So, IMHO You should not see boost gauge read high while reving on idle.

So the best way is to check time 0-100, and drive on max throttle till the end of 3rd gear?

Engage 3rd, around 3,5k rpm. Press brake and accelerator at the same time to prevent vehicle from speed up. You should see full boost.

You can tray on 2nd, but brakes could be too weak to keep speed constant if engine is in good condition .

Boost problems in 944's and any other old Porches are mostly caused by a leaking vacuumsystem. I have had a boost problem caused by a crack in the vacuumsystem, couldn't get more than 0.6 Bar and even when reaching 0.6 it whent down to 0.3 after a few seconds. I concluded at the time that the turbo must be broken so I took it out and send it for renovation, after re mounting the turbo I had the same problem. Then after checking all the vacuum hoses I discovered that a small piece was cracked. Renovation from the Turbo costed me 2480 zl (for nothing) searching, finding and fixing the vacuum system costed me a days work and 5 zl for a new vacuum hose.

The best way to check if the turbine is faulty or at the end of it's live is to listen to the Turbine, normally you can not here the turbo spooling up if you can here it making a progressive wheeeeeee sound than the bearings are fucked up.

944 Turbo's can go 300.000 km if there haven'd be any problems with the cooling pump that allows water and oil cooling the turbo after the ignition is turned of.

Another way to check the Turbo is;
Warm up the engine till normal operating tempurature
Take of the intake hose just before the turbo
connect the water-oil pump directly to te battery so it keeps running oil through the bearings.
Now take a small screwdriver or balpoint and tik the rotor blade in the clokwise direction.
The rotor should keep turning for 5 to 10 seconds, if it only makes a few rotations than it's faulty.
In the same time check the rotor blades for any damage's

Problems whit Turbo?
1/check the vacuum system
2/ check the turbine

Conclusion;
A 944 turbo with a boost problem can be bought very cheap and in most cases it will only require some work and very low costs to renovate the vacuumsystem.
Even if the Turbo would be broken it only costs around 2500 zl to have the turbo renovated.

wszystko pięknie, ale czemu nie po polsku

Nie po polsku bo to "wyższa szkoła jazdy " , lub tylko dla wtajemniczonych . A mama mi mówiła " ucz się synu ucz " .

Nie po polsku bo gert ma male problemy z rozumieniem polskiego, a my nie mamy problemow z angielskim