98RACE":161fz23a said:
Not if its a vac leak to your wast gate actuator!!!!!!!!!! If there is a leak there then not your waste gate is not working because it no being told to work.
Fix the vac leaks!!!!!
+1
If pressure isn't going to the wastegate actuator, it won't open (or won't open fully anyway), and you'll overboost. Also, if the actuator itself isn't working properly (i.e. not opening at right pressure, or siezed/blocked somehow) then you'll get the same thing. There are details in the BGB on testing your wg.
#3 under inspecting actuator operation.
If your wastegate is opening properly, and you don't have any vacuum leaks to the wastegate (also double and triple check any boost controller you may have hooked up), and you have better than stock exhaust, you're probably experiencing boost creep. There's just so much exhaust coming out that not enough can make it through the wg. In that case, porting the wastegate is probably a good option (and not that hard if you have the time and patience, and enough experience to pull the turbo out). Good luck!