The .zip was information I gathered for '7730 TPI application, that was converted to a 16197427 TPI for installing a 4L60E. ... The Memcal and PCM require modification for MPFI, details included in the .zip. There are 3 sheets in the Excel file, Scalars, Flags, and Tables. The injector parameters are NOT included in the spreadsheet, you will need to CHANGE the .bin for NEW MPFI injector parameters. Depending on the MPFI injector that is selected for the conversion, finding the correct injector parameters can become a REAL CHALLENGE! ... The HEX changes in the .zip are for Electric Fan Control ONLY. ... dave w