subaru jon

hi has anybody got info on this.ive got an 2002 wrx uk I had my car remapped by Andrew carr and on my way home while accelerating hard the uppipe gasket blew and I had to drive 10 miles home like this next day I replaced the gasket.would this of caused the turbo seals to go as if I start the car up from cold there is no smoke out the exhaust when at full temp if I accelerate hard a few times when I pull up to traffic lights a cloud of blue smoke comes out of the exhaust but no smoke at all from cold start.the mods on my car are full 3" exhaust system fully decatted including uppipe silicone intake and y pipe and it runs mafless please can some one give me some info.