LB4

I will soon be fitting a SS down pipe, already got a magnex b/b and non res centre fitted. I have no other mods to the engine such as MBC or filters.My question is,if after the down pipe i then decide its time for a Tek re-map what would be the differences between a Tek 2 and a Tek 3 ?... i know the 3 is mapped specifically for the particular car but would this give any noticable improvement over a Tek 2 given the only mods to my car is a full de cat?
Views from anyone with either remap would be appreciated

LB4