power loss after changing battery???

[Craigybaby37_A3quattro]

chnaged my battery over the weekend as it was on its last legs and ive driven it about 30 miles since and it doesnt feel as quick

The car has also lost the very responsive feel that the sprintbooster added that i recently fitted.

the mods done to the car are a custom jabba remap, n75 j valve and a sprintbooster and ive heard that on some cars have the ecu has to "learn" again once batterys are dissconnected or changed is my car going through this process?

 

[HTC]

Give the ECU time to re-adapt and sort out its readiness settings.

It should return to normal with a bit more driving.