code 3 is a map sensor...which means you probably did hit boost. Park the car until you can get it tuned.

I had to drive 150miles each way to get my car tuned the otherday. I didnt even have a basemap. I had my turbo installed...but my OEM injectors, and plugs. I took it VERY easy...never past 1/2 throttle shifting at 3k every gear and accidently got into boost i think once crossing a intersection and the CEL came on ASAP. I shut the car off and restarted it and it went away and i made sure i didnt do that again.