Can someone please explain to me, or point me in the right direction to get some info on PE tables? Just basics: what they, what they do and so forth. Thanks

 

They set your commanded A/F ratio when in PE mode. 14.7/(# in PE cell) = commanded A/F ratio. This applies to the 97 and up Gen 3 calibrations. Not sure what year cal you are asking about. The 97 and earlier Gen 2 calibrations do not really call WOT enrichment PE.