Originally Posted by xr4x4rs
is it going through the amal valve?
if so have you removed the restricotr in it
No, there was a bleed valve on it, but i though this could be the problem and i took it off completley. Now there is nothing connected to the actuator, so in theory the turbo should be making maximum boost.
my TT T38 runs 30 psi with no problems, if you have no air leaks, good actuator (genuine garrett i use) & the wastegate is shutting then you should start looking at your boost pipes, the airbox to turbo intake pipe can suck itself flat, i got Paul Roose to do me a 5 ply intake pipe for mine, the other silicone pipe was not up to the job.
for a quick try you could remove the pipe, run the car up the road & see if its any better.
You could be onto something with this intake pipe...I.ll give it a go tomorrow.
Remove actuator and use a bit of lockwire to hold wastegate arm shut, then try again. Then you can be sure if its actuator or not.
I have tried this already but still no joy....tis a bit of a puzzler to be honest