ive been looking at a remap for my 2011 a4 avant 136 bhp. i tried ringing a few places on saturday but only got through to one. i asked about the custom remap and that wouldnt be a problem but then the lad i spoke to started saying i needed the dpf removing and something about an ep? valve removing.also id need a new downpipe or my existing one modifying. he said if i got the remap and didnt get the other work done the car would end up going into limp mode after a few months. im totally confused now,do i need all this other work if i get a remap? cheers for any help.