EPL's fix fo the 'cat protection loop'?

Not sure to what Tony is referring to here: http://www.audizine.com/forum/showthread.php/642964-EPL-B8-Product-Updates-and-Development!?p=11511971&viewfull=1#post11511971

From the thread:

[quote]That said, I’d be FAR more worried about the factories poorly tuned “cat protection loop” burning things up, then any additional fuel during heavy load.
[/quote]
Any ideas?