pt88 c5 only reads 13-15 psi in datalog.

Ok I just did a boost leak test up to 20 psi with no leaks, AEM gauge reads 17-18 psi like the spring that's in the wastegate. The boost gauge is referenced off the intake manifold. not sure if its in the tune if someone could take a peek that would be great

Car
01 z06
forged 402 10:1
317 heads
234-236 .612 lift BT titanium springs, morel link bar lifter hardened pushrods.
twin in tank 225's 80# injectors 1:1 ref regulator
3 inch dp dumped under the car
air to air with meth injections

Here is the log config and tune I have been working on Tune is on 2:1 ish e-85 93 pump

Attachment 41166Attachment 41167Attachment 41168

What map are you using and is the linear/offset correctly in the tune. Have you checked that the map is reading correctly with your stock map?