Gary Z

I have a puzzle and am hoping someone can suggest an answer. Routine modifications (heads, cam, headers) have reduced my quarter-mile ET from high 13s to low 12s. Power output has clearly increased from approximately 300 rwhp to near 380 rwhp. The puzzle is that my before and after scanner data shows no increase in injector pulse-width at WOT. My data shows a clear increase in mass airflow but seems to show no corresponding increase in fuel. I still have the original injectors and fuel system and no injector PCM parameters have been changed. Any ideas will be apreciated.

RedHardSupra

iTrader: (1)

got logs?

Gary Z

Yes, I do have logs. The attached graphs show raw data from the logs. I verified the dates thinking I must have been looking at two post-mod logs - I was not.

Gary Z

My data shows my stock LS1 had a WOT injector pulse-width of 19 milliseconds at approximately 4800 rpm. Unfortunately I have only one such record so I can't have high confidence that value. I would appreciate knowing what others have seen.