You can buy wastegate actuators separately. I'm not sure what they cost but not nearly as much as a new turbo.well i finally found out what is wrong with the car. i found that the front wastegate is not holding vacuum. i assume that the spring inside went bad or the diaphram went bad. so looks like i will be getting new turbo's
I agree that a simple ball-and-spring valve should take care of it, but the one I was using clearly didn't. I would really prefer to not spend the money on an EBC. EBCs are - I think - slightly more convenient, and the "overtake" boost mode could be useful if you were to use alky or propane and keep one boost level just below the engagement threshold. CART cars use overtake boost to provide maximum acceleration when it is needed for passing, but it is only used sometimes because the engine is not made to be run that hard continuously. It is surprisingly hard to keep boost below a certain point with your foot (I'm finding this out during my break-in), but once again I can see where just one boost level would work out OK.The PRO Boost has no spike and no falloff, at least until my stockers max out at 14 psi at redline. There's nothing an EBC is going to do any better than this one does, and it's less than one tenth the cost.
I am of the school "set the boost the highest you want and leave it there". If you don't want high boost, don't go WOT. If you did go WOT, you did it for a reason and it should be all hands on deck when it comes to boost.
That way I get to chuckle when people have "learning" problems with their fancy EBCs. The ball and spring are dumb and don't need to learn anything