First Map5 allow for more boost over Map 2 but you have to run the car a few times to make Map 5 to learn whats best for your situation. Almost all cases you will have more boost than Map2 unless there is something wrong. Again you cant just switch to map 5 and expect it to boost higher, its a learning mode so you have to teach it. Few full throttle runs and it will adjust accordingly.
As for the Dyno, you sure you didnt have traction control on, as in you held the button for 5 seconds to shut the system down? As well you were up to full temp that lets the JB4 do its job, until 160 degrees on the oil you get no more power than stock. Perhaps even less.
We need to see the logs.