Sputter at WOT launch and at passing gear
Hoping to get some help with my first EFI experience. Have the fitech 30003 with the fuel command center. The issue I am having is when I am cruising along and ease throttle for passing gear it sputters and hesitates for about 1-2 seconds. Same thing happens when launching from a stop. I mash the throttle and it sputters before accelerating. I think it may be going too rich. After this happens a few times it will start to sputter and want to die when coming to a stop. During this time it seems AFR goes lean. If I fire it up and just go for a cruise it seems fine, it is when I drive it hard that the problems start. This car's main purpose for me is to be driven hard. IAC is fluctuating between 4-7 at warm idle. Please if I could get someone to look at my data log to save me from going to a efi tune shop. The first section of the log is when I go to hit passing gear. the second part shows WOT launch and regular driving. For some reason my data logs don't have header labels, but I labeled the ones I knew for sure, sorry. Here is the link:
https://docs.google.com/spreadsheets/d/1IFMl4FysT2u42qmzMjlzattJb3Ns0KjgwPQe_F1syBs/edit?usp=sharing
Here are some details about car.
289 SBF .060 over 9.0-9.5 compression ratio
AOD trans with constant pressure VB
4:11 gears
MSD Pro billet Dizzy with 6AL box
16deg initial all in @ 2500 37deg
Edelbrock performer RPM cam
Edelbrock EZ-street aluminum heads with upgraded springs and retainers