my mate has a gt four celica.
we wanted to know a few things bout them.
when he gets up the car and it hits 10 psi it stuters and wont go any further, almost like a boost cut.
is there a boost cut at 10 psi standard?
also there are 2 hoses comming out of the wastegate. one goes back into the turbo, which is where we have hooked up the boost controller. the other goes into the throttle body and has other stuff running from it. what is the second one for? is there any way another boost controller is hooked up to that. as when he first got the car second hand, it already would hit 10psi, and we were hoping by putting the boost controller in we could control the boost. but it doesn't. any help?