Hi, hope someone can help. I am new on here and have recently bought a mazda 6 2014 plate. 2.2 diesel. The issue I have is when you accelerate it gets to 3000 rpm easy enough but then is very sluggish after that. I have changed the fuel filter and had a dpf clean. But still the same. I am stuck as to what to try next. Mazda put the diagnostics on it but doesn't show anything. Also the guy who did my dpf said something about the egr valve always being 100%open whatever that means.