I have a few questions to clear up about this. First, Is it easier to tune an e-01 with a fpr or can I do without the fpr? Second, Is an e-01, 255lph fuel pump, and 550cc injectors enough to support a lex afm and 57trim turbo? Or should I get the fpr as well for my set-up. I guess the reason why I'm asking is because the Aeromotive fpr is so expensive and I already have a fuel controlling device. Thanks