With my 87 TII, with my turbonetics manual boost controller, I get 10psi in 2nd gear, 12 in 3rd, then almost 14 in 4th. That's what I WANT. But, the only problem is that on my every other RUN, I get only 10psi in 3rd and 4th sometimes. What the heck is going on...is the wastegate acting up? Sometimes I get a good 12psi or 14psi in 3rd/4th gears...but really LATE like close to redline. It comes and goes it seems...never consistent. Does anyone know how to fix this?

 

that happens when youre running long hoses.what mods do you have?if you want to controll boost inside the car its best to go with an electronic controller.