Hi, lately I've had a problem with my A3 TDi running really rough when started in the morning. it sometimes idles lower aswell as lumpy and when driven it will get to 2000rpm then feel like it has a really really bad misfire (and sounds like its hitting a rev limiter) then if you floor it it shakes the car really badly then will run on full throttle. changed the MAP sensor, temp sensor, have tried unplugging the MAF and have run VCDS and it has no fault codes other than an ABS sensor that i already knew about. turbo has recently been cleaned. runs fine after it warms up slightly but runs awfully when started from cold. any one had any similar issues? or know where to start looking next?