Hey Guys, I have a 00' S3 (facelift) with 97k on the clock. For the past few days I have had problems with it. Car idles normally and drives ok until it comes on boost. When the turbo is supposed to come in it starts mis-firing and has zero power. The engine management light flashes orange. Recently had both lambda sensors replaced (audi parts) Had it scanned with an RAC fault code reader and it came up with :- Mis-fire detected on cylinder 4 Any idea what this could be? Could it be spark plugs? Faulty Coil Pack? Or something else? Can someone point me to where the coil packs are located on the S3 engine please (pics would be great) Any help would be gratefully recieved. Many Thanks, Graham.