So bought 99 t4 to convert, was standing for long time. Gave it a blast down the road drove ok. Whining turbo so sent to Midland turbos they cleaned and checked said it was ok. Refitted it and still white smoke when turbo kicks in. Took it off and oil in port on turbo e exhaust ports are dry, feed and return pipes clear no real pressure in crankcase. Egr and inlet manifold cleaned . Resent back to Midland turbo again all ok within spec. So what have I missed why excessive white smoke when accelerated. Could do with some constructive advice please. Cheers Martin.