I have just had my VRS Shark stage one remapped. The garage in Milton Keynes who mapped it have excellent reviews and are certainly well thought of. When the guy test drove it he stated that beyond 6k revs it was misfiring. He thought it might be the high pressure fuel pump, the one bolted to the engine. He replaced that with a genuine one, but again he said there were misfires, that were also showing on his computer which he had plugged in on the test drive. The EML light would flash on when th