NOT KNOWN DETAILS ABOUT GT63S

Many thanks. Apparently the inventory ceramic twin turbos can safely and securely get as much as 14psi. Stock is 8psi. Ive adjusted the air consumption and de-catted and big diameter exhaust – its now boosting to 12psi.I at present push a polo gti 6R ,l was question how would my auto seem like if l had to put a downpipe and would it not attain an