for a couple of weeks, the car ran fine since we did the turbo setup on my bro's teg. yesterday,the car started smoking from the exhaust and couldn't keep idle. the CEL code showed #3 which is the MAP sensor. then we replaced with another one that was laying around. the car ran fine also but the next day it started smoking again. we switched the bypass valve the other way to see if it was the problem and its still the same. anyone?