well i did a oil seal on my turbo , after putting the new one on cleaning all the oil out of my intake pipes, i cleaned the amf sensor, and soon as i went around the corner and hit boost the the car started spittin black smoke and runnign rough, I cheacked all sensors and borrowed a few off a mate, every sensor was great, i didnt check the cooling temp sensor, so i did research asked about , if the cars cold and i drive it and let idle idles great until car warms up. ( only take 30 seconds if that ) any ways i took the punt and yes it was the cooling temp sensor, the cooling temp sensor reads the car engine temp, any ways when they are f**ked they read a nutral degree ( zero) and as ypu wopuld all know a car engine is a lot hotter lol, so they cts is telling the computer to pump fuel in to make it combust to make the engine warmer,