We've been disscusing ijector brands and their different cycle times,which effects richness at low pulse widths.In the tables is injector offset at low pulse widths.I assume that lowering these numbers will lean this out.Anyone have thoughts on this?I also notice that this table is missing for those using tuner/pro.I had to go find this in tuner cat.Now whats up with low o2 upper and lower error?I've used fast rich/lean threshold to lean out to compensate for missing CAT.thoughts would be great.

 

Yes, lower values in the injector compensation tables will make it leaner. Although that is not the purpose of the tables. They are used to linearized the injector flow independent of the PW and vehicle voltage.

The lower & upper O2 tables are the targeted O2 sensor values. They use the slow filtered O2 value whereas the Mean R/L uses the fast O2 and is used for x-count detection.

There is a fueling write up in the Tuning Guide Book sticky, chapter 5, 8063/7747/8746 ECM section.

RBob.