As has been the case through out this you have saved the day Steveo. I’m glad you have a donation button on your page as you certainly deserve it. I dislike the norton antivirus and I’m sure there is nothing bad in any of your files, but it was late at night and I didn’t have time to try much. I’m not new to the idea of tuning, just new to efi tuning. I could mail order but I wouldn’t be satisfied and I’m addicted to learning new skills. It’s not awfully different then jetting and distributor timing and setting advance. Eehack is very user friendly, and I doubt I will have any issues. But I have a spare impala ss Ecm and z28 if things do go bad. I’m also willing to try the maf but I may need a little guidance when it comes that time.