The 2600 is what 740gph...?
Bumping the flow may or may not show as an "improvement" in performance...
Skimmers are designed to work in a certain/limited "range" of flow and air ratio...based on collection chamber size ...
Adding flow by itself without accounting for other design issues may not show as an "improvement..
You may need to "tweek" the air induction to balance the higher flow to see any benifit...
Most likely it'll just fill the chamber and "flood" the collection cup with water..