Hmm, I've never heard of that TPS problem. Seems quite odd. You're running MS-II right?
On the VE tables, just do yourself a favor and get the WB. In 4 drives (and a broken/repaired front diff mount and rolled fenders later...) we have my friend's turbo 77 running 13 PSI without a hitch. Sounds dead sexy and even spins the drag radials hitting 2nd gear at 10 PSI!
If you're set on using the narrowband, I think some people really like MegaTunix's tuning capabilities, you just have to make sure your O2 is in good working stated (not laggy or irresponsive). Maybe give that a try.
Good luck!
Mario