1055
If the carb and the injection both show high maximum EGT then:
Both are lean at WOT.
Your EGT has a problem.
Your timing is not correct.
Your pump is bad if using same one for both carb and injection.
Or a combination.
What is your idle EGT on the carb and injection? 450 ? If it is way high at idle, your EGT could be wrong.
Does it have any of the same other problems with the carb?