Hoping someone can help me. I have a Fabia 2 Monte Carlo 105 Cayc. It has just had a replacement engine with the turbo refurbished, complete set of new injectors all coded accordingly, a dark side EGR delete kit and the DPF gutted. Started the car and obviously had the EGR fault as it has been totally removed and low fuel pressure as I had to bleed the fuel system. Once running and faults cleared the only fault that remained was the EGR and the car was in limp mode with EML on, other than that it ran sweet. Got mobile remap guy to carry out the EGR and DPF delete and the EML was gone but there was a bad diesel knock after. Remap guy told me it was injectors these have been sent back and tested and have come back with no faults. Car has now been towed to another tuning garage as couldn’t get back in touch with mobile guy and they have put back to standard and it is still knocking, but apparently there is an intermittent ECU non communication fault. Has anyone got any ideas?