Swap 2015 ford transit 2.2 timing chain

2015 Ford transit t350 LWB 2.2 Duratorq engine timing chain Got a replacement ECU recently as van wasn't starting. Van runs and drives ok but engine not running right on idle since replacement ecu fitted. SWAP WHAT HAVE YOU FWD Tested till September 26 Tax out end of April can tax if required at extra cost. 254800km Tinted side windows Tow hitch Bonnet protector Sun visor Imob auto Front roof light bar with parking lights beacons and light bar Imob auto Rear roof light bar with parking lights and 4 led work lights Bright led Work lights in back of van Lights, Strobs and beacons in the grill Cruise control Bluetooth radio shelves drawers and work bench in the back Parking sensors Dpf mapped out Also comes with a set of cvrt compliant numberplates Few mark here and there nothing major swap try me what have you Search Fitter mechanic mobile tyre breakdown recovery