Originally Posted by
ashtonsser with my 60 trim T3 with the .82 turbine housing and tubular manifold i was running, i would have nasty boost creep with running my Tial 38mm, It had a 1bar spring in it but with the boost controller off it would hit 19-20psi by redline no matter what i did. It will sit at 14.7psi till about 6500 or so then rise slowly to 20psi by redline. It was a simple matter of that it was too small for the turbo i was running and the boost and power levels i was running.
Thats why with this 6765 that im gonna run i went to a 50mm Synapse wastegate. Ill probably adjust it to hit 18-19psi. It has full adjustment which is a really nice thing so your not having to swap out springs. Then use my electronic boost controller to go to 30-35psi maybe more. But you should have your spring set to the lowest psi you want to run.
Do you have any pics inside of the manifold?
One important factor many forget is wastegate placement.
When looking inside of manifold where the runners meet, the "point" that is created at the collector must sit below the wastegate outlet. This is one of the main causes of creep on ram-horn and poorly designed tubular manifolds.
I have run your turbo on many application with a 38mm gate with no issues.