Highest Possible Value of EGT?

If you really did have 1832F you'd most likely have engine damage. There is something wrong with the reading.

Yes of course.

950C /1742F is maximum limit. your engine is working +50C. It's strange and unacceptable.

Whereas all parameters are within range.

There must be something wrong data comming from EGT. It's needs to check same flydate with any other engine for verification.

1742F for the 912iS engine and 1616F for the 912ULS.

Which engine are we talking about?

d 

Correction.?

912 Rotax EGT, exhaust gas temperature probe location

The exhaust gas temperature (EGT) on a

Rotax 912 series of engines with both ignition circuits active should read 1470 degrees F (800 degrees C)

and should not exceed 1560 degrees F (850 degrees C) .

These readings should be taken by EGT probes located 2.76 inches  (70 mm) down stream of the exhaust flange.

Reference.

http://www.ultralightnews.ca/advisories1/912egtprobelocation.htm