Past Driver’s Ed
^ x2 When I first got my supercharger with a 3.15” pulley I went through the trouble frying to calculate what injector size I needed. I thought 600cc injectors with the stock fuel pump and fuel line system would work for my build - NOT - ran lean at 8400 rpm. On my current build I’m pushing 10.7 psi after the aftercooler and i’m achieving solid performance using 1000cc injectors when running on 93 octane or E85 fuel. I wouldn't go smaller than 750cc.