I emailed him several times and he can do a lot, but in the end, you have to mail the ecu to him for a PCM reflash. He is able to do a tune for a naturally aspirated stock or slightly modified 4.0 and stroker with slightly larger injectors. He can adjust the fuel and timing maps, rev limiter and some other smaller settings. As far as Boosted, it is possible with larger injectors, he can do it best if he was with your car on a dyno where he can tune it in real time. But that is like 3-4 hours of tuning. Most likely you will need a 2bar MAP sensor but then you lose tune scaling. Doing a boost tune thru the mail, might not work so well.
For forced induction, the options are limited,
1)AEM F/IC and 6 larger injectors but then you will have to tune/dial down the N/A portion as well as tune/dial up the boosted portion. The AEM will also control the timing retard needed for boost. This will have high intake air temps unless intercooling is used or water/methanol is also injected.
2)Auxillary Injector Controller and Timing Retard and use a '7th' injector. This method will run just as stock when out of boost and under boost the 7th inj will add the fuel enrichment, usually before the s/c, so it 'mixes' well with the air and distributes evenly. The fuel will also act to cool the intake charged air by 50-80 degrees.
Both these methods have been hashed over and over and have their own pluses and minuses.