Hi, Girlfriends Fiesta (year/model to follow) lost power on the motorway at the weekend. The engine is running really badly and feels like it's firing on 2 cylinders tops. It's not been well looked after, so I assumed general service stuff would fix it. Garage has done the sparks, oil filter, air filter and are now thinking that it's the ECU (£50 to test). The car is probably only worth a couple of hundred quid, so not wanting to spend too much. I thought ECU was a last resort. At a guess I was going to suggest: HT Leads Dizzy Cap Rotary arm Fuel Filter Before even looking at the ECU. Any other ideas? Also, can you get a scrap ECU mapped to a car, or do you have to buy a new one? Cheers for any help.