i have heard this also but was when they had cc fitted, which i had fitted after having it mapped. so i asked at awesome if that was possible and they basically said it wasnt possible.
and so ive replaced the maf bosch, n75, 007, lamba, coil packs, turbo, vacuum pipes. checked and tightened all boost pipes and still only making 2100mbar which is all the ecu is asking for.
is there a way i can check to see if its in std mode or remapped mode, thanks mike