Corolla 96 1.4 4e-fe Engine Compression Test

[Jano7]

I just did compression test on my Corolla 96 4E-FE.

I warmed up the engine before the test by 5 minutes drive.

I got 8.5 Bar after first crank, final max pressure 15 Bar after 4-5 seconds.

The pressure was gradually increasing by about 2 bars each crank.

The same for all cylinders.

The pressure should be 12.5 Bar in acorrding to service manual, i got 15.

Is it required to de-coke my engine? Are piston ring worn?

I am also confused because there is 55kw (after) and 65kw (before 1994) version of 4E-FE engines for E10 corolla but service manual does'nt mention this. So I don't know whether 12.5 Bar compression pressure is for 55kw or 65kw engine.