Please can anyone help me out..... my car accelerates nicely and smooth if i drive foot flat but if i wana build up slowly it hits about 8psi and splutters and drops down lower and then struggles to gain again unless i drop down a gear... i have a bran new K03 turbo, i have a recirc valve on there, and i am running manual boost aswel, the manual boost works well because it works if i drive flat out, but im having problems working out what it wrong??? i also have it remapped at the moment, and the max psi is about 13psi at the moment. i just want the splutterling to stop so i can drive like normal sometimes it becomes so bad i have to stop for a bit. ive been told could be MAF?... boost leaks, but it cant be boost as works fine when flat, i been told it could be the dump valve, but that sounds ok, and its all new pipes... please help

mike

1996 Audi A4 1.8t