Was wondering if someone can help me with this topic, I recentley bought a used 2009 STI and have had it for a thew weeks its done 30,000 Klms so the engine is well warned in. I had 4 friends in the car one night and was boosting it quite a bit. The next morning when i started the car in the morning white smoke came out of exhaust when i reversed out of carpark alot of it, I went down the road and rev the car more but none came out this time..boosted it once it warmed up and still no smoke? So for some reason smoke came out once ? Would it be because i maybe didnt let it cool down from thrashing it with my friends that night ? Has anyone had this problem before ?