I have this 5.3 the stock Inj tables I don't get at all. this car had really bad gas mpg please check what I did thank you I left you the stock and the one I did. the customer is only using 87. I drop the timing due to ping with 87. he used 89 went away took a little timing off now good. he went up from 11 to 20mpg no codes dosnt look like I am leaning anything out, also has a lot more power I changed the pe enrichment tables to 12.7 to 1 and went from 87 to 60% TPS thank you for your time.