(it was recommended from factory the G63B should run on 97+) ??? Ive been running 87. Although I've only ran 2 or 3 tanks since my rebuild . Should I switch to 97?? I'm also wondering if the holley FPR I have on there causes a lack of fuel to accelerator pump because I have to pump the gas like 5 or 6 times before it wants to turn over. Also lmk if the different size jets make a difference? Seeing mine is a 2.0