I've started a thread on 'Torque' regarding AET.
If I have to send my turbo to another setup, I'll sue them for all the money I've paid them, plus damages and time wasted.
I need to be 100% certain first.
I have to check the exhaust silencer and backbox for any blockages (although that would not create the symptoms I experience)
I have to vent the crankcase straight into the atmosphere, bypassing the camcover completely. This is to eliminate any 'blowby' theory.
You see, it could be that there IS a pattern, but it could be:
1. AET are making the same mistakes on everyone with an LET and charge in cowboy style
2. All these are tired engines with the same undelying problem that will kill any turbo, however well it's been reconditioned
Now blowby, if excessive could theoretically block the oil return, causing the exact problems we're experiencing.
I've looked into turbocharger-rehauling manuals and there are limits to the acceptable crankcase pressure (like a FIFTH of a psi)