Here's what I'm talking about. RPM on the Y axis, Time on the X with the blue chart and the second chart has the Injector % and A/F.

You can see you're running out of fuel at approx 7 seconds and it does not return to normal until about 12 seconds. This corresponds to the top of 1st gear through when you hit 3rd. When I see the yellow curve get flat at 50%, I'm thinking this is actually fully maxing the injectors on the sniper (orange curve). During this time you get well over 20:1 AFR so the car will miss and run like crap.