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When I was driving on the German highways I noticed that mij turbo engine didn't go faster than 160 km/h. It wasn't possible to get it past 4000 rpm at full boost. The fuel presure is around 5 bars at this moment.
In other gears than fifth I can get over 4000 rpm. In fifth at these rpm's it heats up for about 10 degrees C.
Anyone ideas what the cause could be?

a friend of mine had the same problem with a 1,8 turbo and one piston had a big hole in it.?????
hope it is not the case here

Compression without oil:
Cil 1: 11,2 bar
Cil 2: 11,2 bar
Cil 3: 11,3 bar
Cil 4: 11,2 bar

Compression with oil:
Cil 1: 11,5 bar
Cil 2: 11,8 bar
Cil 3: 12,1 bar
Cil 4: 12,5 bar