Hi fonished the big td5 rebuild and atarted first time. However on checking the injector codes with nano evo, i noticed they are not the same as what is fitted, so went about writing new codes on screen typed write settings and screen comes up with write ok. Problem is when you leave that screen all the codes are lost again. Please can anyone help mine is a 1999 td5 non flash ecu 10p engine in a disco 2.