1100 is not very high . a k04 is factory rated to 1050 and gt2871 can stand 1200.
also , almost all of the software suppliers "lie" about EGT.
when you have an aftermarket TB or DP , the EGT from vag-com are unreliable , also the tune provider has an option to "play" with the way EGT's are calculated since there is no real EGT sensor on our cars.
i've seen K04 cars with tunes max out external EGT gagues that go up to 1100 on a WOT pull from 2nd to 6th.
i do believe that if i max out a 2871 , 1100c will be o.k for normal driving but will not give me enough clock headroom to understand how high the turbo goes when i work on the tune.
i also checked now PLX devices which are extremly good , unfortunally their EGT probes go only to 1028c which is of-course not enough on our cars.
the TFSI runs extrme EGT's compared to other cars and therefore it is really hard to find a good probe