Hi, what's the highest psi have you guys squeezed out of the factory turbo before it shit it self ???
I found the boost starts to drop off at higher revs due to turbo being too small even at standard boost. Increasing the boost may give you some gain down low but it will likely not help at the top end.
if you will play with the turbo you must play with the ecu too. the factory turbo goes up to 0,5 psi. An endless and very risk and expensive play.Nobody doesn`t need it with this tiny car. change that car to an Nissan GTR. My five cents, after play with that for thousands of euros...