My GTI also suffers from thsi 'fuel cut' type intermittent sensation when occasionally in the high revs, and my car is (afaik) on standard map.
I have a twintake fitted but it suffered from this problem before the kit was fitted. VW have logged no faults and say they will not change plugs until 60k
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Which plugs are recommended for a standard GTI, as an improvement over factory fitment?