The PTU is the updated series. There is nothing wrong with it, I misdiagnosed it as faulty chasing a misfire about a year ago and it has been sitting in a box inside ever since then. I can swap between the new PTU I bought as I replacement and it with no change in engine quality, driveability...it works flawlessly. $55 shipped and paypal-ed.
Also I have a new in the box set of PBR Ultimate front brake pads for the Z. $55 shipped and paypal-ed as well.
zpmps AT yahoo DOT com, I can ship out anytime this week.