Anything you can do to improve flow will help lower EGT's. Some other things to check also would be exhaust leaks (pre-turbo) and boost leaks.
But.........
1200 deg. is not that hot, you can sustain 1200 all day long and not have a single issue. It can even get hotter without issues, as long as it not for a long time. So drag racing, pulling your buddy out of the ditch, giving that ricer a run for his money........dont even worry about EGT's.
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