your ecu is compensating for your boost and that could be the reason why your CEL goes on.......if i read it correctly..
anyways, you shouldn't boost that much without much mods if you're just stock.
Boost is addictive but do it the right way. I haven't seen many DSMs around Uni...that or they have no clue what I'm driving. *sighs* well, how many miles do you have on it?