Originally Posted by
Jon S.
Gentlemen, hopefully we have answered Jason?s original question / concern.
Threads often get derailed into side issues (which are also important), but may not assist the original poster of the thread.
HPT did not completely label the table in question, which means that the end user must make a logical inference.
If you check other tuning software, we will see that this table is labelled as EQ Ratio.
If you look at parameters in HPT involving:
Open Loop Fuel
Power Enrichment
Catalyst Protection
You will notice that these all reference EQ Ratio (not Lambda).
With the P01 and P59 PCMs (LS1-B for the EFILive crowd) GM used EQ Ratio as the underlying basis for fueling.