know anyone with a tuna or a wb? It will most likely work alright.. but taking it off until you can make sure is probably a good idea. I know it works fine with the UTEC, and if the map on the accessport is set to reach a certian PSI and you are just using a MBC to get to that psi -- everything should be close enough.
Does an accessport show knock via check engine flash or do you just have to feel it when it pulls timing?
Either way, if you arent going overboard with the MBC and keeping it at sane levels, I dont see why it would be a problem.