pls can somebody kindly advise why my sti 2005 will not maintain the boost level???? been trying hard to get information on how to maintain at 1.4 bar.....
my is still std but with a piggyback adjusting on the airmass.
heard from somebody if the exhaust will to be change to a larger one the boost will maintain?????????

help help needed.....
thru the regulation of singapore the exhaust pipe will definitely posed a fine!!!!!!!!!!!

 

mods another possible move to General Technical might get a better because of wider audience.

 

thanks will do that