There's two schools of thought on EGT probe location, because the turbocharger can really draw heat energy from the gas (up to 250 degrees C). If you tap the manifold just before the turbocharger you'll get a lot more variation in temp and a lot higher temperatures displayed. If you tap into the dump pipe, you'll see a lower, more stable temperature. Both methods are suitable, but when asking about whether this temp or that is appropriate, you need to say where the probe is located.
A convenient location some people use is where the EGR pipe comes out. Remove the EGR, make up a plate of a decent sized material (eg 5-6mm mild steel) and then mount the probe in the centre of that and fit it to the vehicle.