Fault is lack of power especialy when cold, power is very flat when hot 40mph max top speed. It did have 2 fault codes when first tested turned out to be broken wires on top of EGR unit these were repaired but still did not fix fault,EGR valve and pipes cleaned and ok vehicle does not smoke, i left all readings at work, used revive on turbo system it had a service with a new fuel filter 2 months ago and ran fine till monday. We cannot find any faults, today a friend came in with same engine, just to try we did something we dont do but swopped out intercooler and turbo side pipe, throttle pedal, air control valves on bulk head still same.Turbo vanes look ok does have turbo pressure and all spines fine, ECU pins clean exhaust not blocked.
Thank Mark