You were almost there. Just join the array back. And note that map{$_}(0..4) is just the same as 0..4 itself, so you can write:
print {$FILE4} join("\t", (split /\t/, <$FILE1>)[0 .. 4]),"\n";

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In reply to Re^3: Deleting a columnheader by choroba
in thread Deleting a columnheader by bluray

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