Heres a poser then. work done over the last 2 years. New turbo fitted and all seems fine with it. Actuator arm moves freely no issues in the vacuum pipes. No splits in the pipe work running round to the inlet manifold. EGR valve is as clean as a whistle and functions ok although I have blanked the thing off. Inlet manifold is also cleaned and fitted new gaskets when replacing. Intercooler is clear and no splits. Dual mass flywheel replaced including new clutch etc. New set of injectors and recode including a software update. New exhaust system including cat. No fault codes, no flashing glow plug light and no error codes. The car runs sweet but lacks the sizzle it used to have when you ask it perform. I get a rumbling sound which I thought was exhaust when you squeeze the throttle and at the point where the turbo starts to kick in. Its not exhaust more like the engine is struggling to draw air through the pipe work instead of the turbo forcing air through. I am thinking map sensor may be duff. MAP sensor was taken out to clean and when replaced the engine became noisy the good old diesel clatter. The clatter is not bad but is always present, lack of air? MPG is reading 54.2 and pretty constant although put your foot down and it drops off quickly. Any ideas guys?

Edited by Graham. on 25/03/2013 at 10:13