Whenever I've been driving the car for a period of time (say 20 minutes on the M4) and then come to a stop, the car stinks of rich fuel. Properly stinks. I'm getting a 17705 and a 17545 (fuel trim bank 1 too rich or something). Any ideas on the cause of this?
I'm thinking: Dodgy MAF? Boost Leak? Problem with my Forge DV?