So ive shortened the wastegate shaft by 4 turns, its has actually made a noticable difference to acceleration and hill climbing! Not by a lot, but its there!
I might pop down to the local Halfrauds a buy a boost gauge when i can be arsed.
Good job!
First / next, fit the gauge at the MANIFOLD, and not just a Tee-Piece at the turbo end. This will show you the real boost at the engine.
I suggest you don't adjust again till the gauge is fitted, just in case it over boosts, though I don't think it will.
I predict that making the rod shorter by any more will not increase the boost much more, if at all. The turbo is set up (turbine and impeller sizes etc) to match the engine reasonably well across the range, and I think you will be lucky to get to 1.3 BAR 20 psi. But you will feel the difference from the original maybe 0.8 BAR going up to maybe 1.2 BAR. #
Good luck if you do!
CharlesY