Help, I have just bought an e39 520i and it starts nice, idles nice but only performs on the first quarter of throttle and the last 3/4 throttle very little response. The fuel economy gauge moves very little from cruise to full power. To me it is just not getting fuel, do they run a fly by wire throttle/ any ideas will be appreciated, Mike. Also has anyone got a m30 3.5 litre engine for sale, must have wiring attached not needing the rest of the loom though as I'm going to link it.