The Ace

OK, so I took the big step, and bought the EMU along with the Trust MA-11 harness, A/F option and O2 dongle for my RX8 (4port manual, EUDM). I also have an AEM UEGO wideband installed just before my RP Supercat, which will feed the EMU with AFR data.

As far as I can tell, if I don't decide on doing any <90% ThrotlePct tuning (so I'm sticking with WOT and only >4000rpm), the installation and tuning should be easy, i.e. install the harness, route it inside the cabin, install EMU, connect the A/F option, and then turning it on and start tuning

My two big issues here are:
1) Is the TargetAFR feature enabled/working on the EMU ? I've heard mixed stories.
2) I don't plan on doing anything with timing yet. Should I be doing anything else other than messing with injector maps ?

Also, some help needed with the A/F of my RX8. I am posting the logs I did with sCANanalyser in 2nd, 3rd and 4th gear reading the stock wideband. Seems like my car is running VERY rich. From what I have read here, I should be aiming at 12.8-13 above 4000rpm, correct ? Which maps and values should I be messing with in order to effectively and ONLY trim fuel ? Should I just start with a flat -5% across the board and see what comes of it, or something else ?

Some starter pointers would be more than welcome...