FiTech EFI system

Sounds like an accelerator pump setting I believe.

Responded to your pm, but for the public eye...

dTPS Acc Gain = In order to “help” the acceleration fuel be large enough to handle a sudden throttle
snap open, the speed of throttle opening is used as a bit of a helper to make it bigger as the speed of
the throttle is opened faster. A larger number here will make it more sensitive to throttle opening
speed.
dTPS Acc Max = The dTPS fuel gain multiplier is limited to this amount. 100 means that no help is
given by this function. 199 means that the Fast Accel fuel is nearly doubled if the throttle is moved
quickly enough.