bogging in boost

[Pimpin Dsmstyle]

My car was just put together and just started running so it could be a number of things. Im not sure what my car exactly is doing when i hit the boost , but it bogs down hardcore if i hit max boost ( stock). My RPM guage is not hooked up yet so i cannot see what the RPMS are doing, but i will be getting that hooked up asap. What could be some issues with this? ANY help or suggestions would be awesome. thanks.