Originally Posted by
Ginger Will
Surely the amount of boost wont make any difference to the fuel rail. The connection of the injectors into the mainifold is as factory and 3-4 bar of fuel pressure is loads for a petrol injection system, isn't it?
lol turbo cars are fitted with rising rate fpr as every 1 psi of positve boost will act on the open injector.
for example if you have 45psi fuel presure and then run 20 psi boost when that injector opens it will only be like 25 psi fuel presure as the 20 psi boost will over come the presure of the fuel.
so turbo cars are fitted with riseing rate fuel pressure regs. so for every 1 psi of positive boost the fuel presure is rasied buy 1 psi. (hence the little vac pipe on the reg)
hope this helps
