I'm running the Accessport Stage 1 93 v403 map and the target boost is 23.5 psi according to AP Manager. The AP often shows a max in the range of 26 psi during a pull. During two pulls earlier tonight, psi read mid 25's and mid 23's. Highest knock sum I have seen during wot pulls is 2.0 (possibly 3.0) according to the AP.

Is 26-26.5 psi too much for stage 1? Is that amount of knock ok? Should I run the Stage 1 93 LWG v403 map, or is it alright to keep it on the standard Stage 1 93 map?

 

The 26 PSI is just spike your seeing thats normal, your AVG will still be target like 23 24 PSI.
It's normal I ran like that for a year before switching to stage 2 and 3.