lawnmower wrote:What happens with an E888? The expander uses the inj trim tables right?
Yes, if you choose to use the expander outputs as needing an aux table, you can set up the expander to only use unassigned ind cyl trim tables, or all of them. If things are getting pretty 'full', reassign outputs that don't require a table (fuel pump(s), fans etc.) to the expander and keep your fuel trim tables.
I'm not positive but believe fuel trim tables 5-8 are still present in firmware on the M400 and can be reassigned to the expander. Ask Motec to verify.