Engine fuses and supply line....

My BMM engined octi has a mis issue, as if it were a petrol is the best way to describe it.... having had the injector loom changed, the injectors themselves, MAP sensor, MAF sensor, Oil, Oil filter, Fuel, Fuel filter, egr valve, I have come to the end of my tether and its now got to be an electrical issues me thinks.... I would like to know the fuses, and relays etc that supply the engine with its electrical feed... which pretty much comes in to the injector plug from what I can see plus a few other minor spurs for sensors etc.... ANY THOUGHTS.. OR if your near Bristol and fancy a gander... NO error codes, no dash lights, no flashing lights inside or outside (even though it was a police car) Skoda themselves changed the injectors etc on Wednesday, I drove back to Bristol (120miles) and it was fine no missing no issues, next time I start it its there again but now even worse since recent work carried out. LOADS of grunt and pulls like a train, just missing like a petrol engine with a duff HT lead ???????????

Thanks for any info or advice.