Let me clear that out for you
What shan means by a two stage turbo is using two turbos instead of one. Where one is of a smaller housing and a smaller ar ratio. Which helps it spool faster, for low rev operation. After which the larger turbo kicks in for higher revs. Which gives a good power band.
But for amits application, a small single turbo would be more than enough. But though when reliability comes into picture the cielo motor has to be worked on intensively to prevent meltdown. As fueling etc has to be taken care of. In a normal motor such as a cielo i think more than 5psi is not recomended at all. Even a 4-5 inch boost will give pretty good power.
Cheers
Dom |