I had been having problems filling my car , when doing so the pump would constantly click not allowing the tank to fill more then about 2/3rds. I reported this today to Bromley HPC who took the time and trouble to find the problem and rectify it . The issue was the driver ie me had not read the manual, apparently the fuel tank sits directly over the gearboxes and as such gets very hot , this supposedly causes the fuel/vapour to expand and cause the problem , this is documented in the owners manual I just never read it . I did have the same problem when I took the car for optimisation at my supplying HPC ( not Bromley ) they simply said it was not a problem and gave no further advice . Bromley HPC took the time and trouble to investigate and report it back to me in great detail , sure enough from cold full tank, thank you again Bromley HPC am very happy indeed .