My 2005 2.2D Sport has started juddering / missing at low speed when engine is started from cold. Fuel consumption has also declined significantly from low to mid 40s to mid 30s. Over past 12 months (8k miles) have changed turbo (ouch!), EGR valve, MAF sensor and all filters. Inlet manifold cleaned as well. Seems to run fine once warmed up and up to speed. Engine has done 130k miles. CR Tech tuning box fitted a couple of months ago.
No fault codes being picked up by code reader. Advice gratefully received.