According to the January 2012 Extol Insider newsletter, there is an Outbound Throughput Enhancement scheduled to be included in the next EDI Integrator for i (EEI) release, 6.3.
This change in outbound processing “…greatly improves throughput, especially when processing small, frequent connections… Internal tests have revealed throughout [sic] improvements of up to 50%.” Could be impressive, if true.
EEI 6.3 is nearing release date, currently scheduled for the end of the first quarter (March 31st). See Extol’s January newsletter for more on this and other news.