Sorry if this is a stupid question. Never owned a turbo car before. Have a 2000 a3 1.8t when putting my foot down gets to about 0.5 boost and seems to hit what's like a limiter. Change gear again and it will go again for a bit but theres a definite wall at 0.5. Cars no where near the red line on revs. This normal? Has had a stage 1 remap as far as I know.