exskilla

Hey guys,got a mind boggler,lately I haven't been getting any lift,lift bolts are new & the car still revs down in 7.5 pretty strong no lift,so I had to take out the battery the other day,when I put it back in & move the car & when I accelerate d I had lift again but the moment the car was turned off & restarted it was gone,tried taking out the battery again to see if it would work again but nope,any suggestions

hi good evening guys I'm newbie to this club,nice to meet u all