Over the winter I had been getting some fishy boost behavior, mostly inconsistent and less than full boost. Yesterday the weather decided to turn beautiful, with temps in the low 80's. I swapped on my summer tires (yay!) and went for a test drive. About 5 min into the drive after the engine was warm I did a 3rd gear pull. Boost spiked 15 psi, dropped and held at 13, then suddenly dropped back to 7psi which is where I have my wastegate set. Every successive pull held steady at 7 psi. My code reader pulled a P0299 fault (turbocharger low boost, mechanical fault), but no CEL. If I power cycle the car, the boost will momentarily hold at 13psi on the first pull before falling to 7 and staying there. Between the code and the boost behavior, I'm nearly 100% certain that my IPD TCV has gone out...as opposed to, say, a boost leak. There have been tons of reports of the IPD TCV not being up to tuned applications, so it looks like I'll be swapping out for a Phuzz TCV. Does my diagnosis sound correct? I always hate just throwing parts at a problem, so before I drop some $ does anyone have any other suggestions?