So this morning on my way into work a got on the x and felt the car cut out at high rpm. I initially thought it was redline but I am thinking that the boost cut out. When it cut out I got out of the gas of course and the check engine light came on. The car seemed to operate normal after that but I do think I am pushing less boost now and the cel is still on and steady. I don't have my ap to check since i'm at work right now. What is everyone's thoughts on this. Could i have popped a coupler loose and It's just pushing less boost? It also was 30+ degrees out; i could have overboosted bc of this.

Mods: invidia q300, K&N w/ uicp, tune

Thanks for any help.