These setting adjust how much fuel at varying temperatures the system injects when you accelerate. I called fi tech and they are sending me a new one.

Fuel Delivery Or Fitech Issue Fitech Efi Tuning Forum
Fitech accel pump settings. Accel pump 65f adjusts the fuel film compensation when cold. You will see a menu with multiple different settings you need to focus on the accel pumps 20f 65f 170f and fast accel 20f 65f 170f. So thats what im going to do for you today. Accel pump 170f adjusts the fuel film compensation when warm. Then find accel pump and press enter. Fitech accel pump and temp also note that the labels may not change for some of the gauges when you change the break points.
By the way my handheld controller died all i get is a white screen. That threw me at first but the settings were actually changing so its just the labels that stay at the defaults. These settings adjust how much fuel at varying temperatures the system injects when you accelerate. Buy the fitech here. 0 means it uses the default calibration directly. When i installed my fitech and was trying to learn it i wish i had a walk through of someones settings i could copy.
Accel pump is used for any normal throttle input and fast accel is for any fast throttle inputs or wide open throttle. Above 2500 the afr goes back to 13 14 and it pulls strong so i am thinking that i need to adjust the accelerator pump settings. Accel pumps 20f 65f 170f and fast accel 20f 65f 170f. 0 means it uses the default calibration directly. Accel pump is used for any normal throttle input fast accel is for any fast throttle inputs or wide open throttle. Chin today im gonna show you how to set up the excel pump settings on your new system today we have a co street here um were gonna show you the steps that it takes that if you have a hesitation or bug when you step on the gas on how to adjust us its actually a very simple setting if you go to your hand held plug it in well go to a section called go five tuning in there.