Hi, Im going up to Scotland in May and there is no Shell Stations round the area i am staying. I used to run my Car off Tesco Momentum 99 and when i got it remapped it started hesitating whilst accelerating hard at motorway speeds. When i run my car off V Power it does not hesitate When i run it off Tesco 99 it does. I was just wondering when i go to Scotland would it be better for me to put Bp Ultimate 97 in or Tesco 99 ? Thanks in advance.